Product APIs

Create a simple product tutorial

A simple product in the RCE is a physical product that is shipped to a customer.  A simple product might be, for example, a lamp, or a vacuum cleaner.  It has no options attached to it such as size, colour or material.

Each simple product will have its own unique SKU, its own unique URL, and its own inventory count (assuming the store is actively managing inventory levels).

Resources

https://rezolve.com/rceapidocs/swagger-products/

Step 1. Plan the product

To create a configurable product programmatically, you’ll need to know the following:

  • The attribute names and values defined in the attribute set assigned to the configurable product.
  • The categories numbers assigned to the configurable product.
  • Which attributes to use as the configuration options.

Since this tutorial uses the sample data, we can take advantage of the options that the Top attribute set provides. This attribute set contains attributes that describe the fabric, sleeve length, and other characteristics that are specific to clothing. It also includes EAV attributes such as size and color, which are commonly available to all types of physical products.

The size of the t-shirt will be the configurable aspect of this product. Therefore, we’ll create a simple product for each size (Small, Medium, and Large).

Define product characteristics

The following table lists the general characteristics of men’s t-shirt we’re creating. These items are among those listed on the New Product page in Admin when the Top attribute set is selected.

Characteristic Description
Attribute Set Default
Product Name Champ Tee
SKU MS-Champ
Price 25.00
Tax Class Taxable Goods
Weight 0.5
Categories Men, Tops, Tees
Visibility Catalog, Search
Color Gray
Description The Champ Tee keeps you cool and dry while you do your thing. Let everyone know who you are by adding your name on the back for only $10.

A merchant typically provides the product name, SKU, price, weight, and description. The other characteristics are defined by the system.

Find the system-defined values

We’ll make several calls to find the values needed to create the product

Get the attribute set ID

The sample data provides multiple attribute sets, including Default, Top, and Bottom. To assign the Top attribute set to the product, we need to know the corresponding attribute_set_id.

Use the following call to search for the attribute set named Top.

Endpoint

GET /rest/<store_code>/V1/eav/attribute-sets/list?
searchCriteria[filter_groups][0][filters][0][field]=attribute_set_name&
searchCriteria[filter_groups][0][filters][0][value]=Default&
searchCriteria[filter_groups][0][filters][0][condition_type]=eq

Response
The attribute_set_id for the Default attribute set is 2.

{
    "items": [
        {
            "attribute_set_id": 2,
            "attribute_set_name": "Default",
            "sort_order": 0,
            "entity_type_id": 4
        }
    ],
    "search_criteria": {
        "filter_groups": [
            {
                "filters": [
                    {
                        "field": "attribute_set_name",
                        "value": "Default",
                        "condition_type": "eq"
                    }
                ]
            }
        ]
    },
    "total_count": 1
}

Get the list of attributes defined in an attribute searchCriteria

Use the GET V1/products/attribute-sets/:attributeSetId/attributes call to return information about the attributes defined in the Top attribute set.

Endpoint

GET /rest/default/V1/products/attribute-sets/9/attributes

Response

The response contains almost 3,000 lines. The following table provides a summary of the attributes that are relevant in this tutorial.

 

Admin label Selected value Attribute ID attribute_code Attribute value
Tax Class Taxable Goods 132 tax_class_id 2
Visibility Catalog, Search 99 visibility 4
Color Gray 93 color 52

The attribute ID and value numbers might be different on your installation. Check the values carefully before using them in your calls.

Get the list of category values

You must assign the product to one or more categories to enable customers to find the product by browsing. We’ll assign the Champ Tee to the Men, Tops, and Tees categories.

Use the following call to search for all categories (id is greater than or equal to 0).

GET /rest/default/V1/categories?
searchCriteria[filter_groups][0][filters][0][field]=id&
searchCriteria[filter_groups][0][filters][0][value]=1&
searchCriteria[filter_groups][0][filters][0][condition_type]=gte

Note that women’s tops and tees have different ids than men’s tops and tees. The values for men’s clothing are:

  • Men – 11
  • Tops – 12
  • Tees – 16

Step 2. Create the simple products

Although it’s not required, the simple product payload also includes stock_item information. By default, the RCE store hides out-of-stock items, so adding stock will make the Champ Tee visible on the website.

Create the first simple product

Before you using this code sample, verify that the attribute values are the same in your installation. See above

Endpoint

POST /rest/default/V1/products

Payload

{
  "product": {
    "sku": "MS-Champ",
    "name": "Champ Tee",
    "attribute_set_id": 2,
    "price": 25,
    "status": 1,
    "visibility": 4,
    "type_id": "simple",
    "weight": "0.5",
    "extension_attributes": {
    	"category_links": [
    		{
    			"position": 0,
    			"category_id": "11"
    		},
    		{
    			"position": 1,
    			"category_id": "12"
    		},
    		{
    			"position": 2,
    			"category_id": "16"
    		}
    	],
    	"stock_item": {
    		"qty": "10",
    		"is_in_stock": true
    	}
    },
    "custom_attributes": [
    	{
    		"attribute_code": "description",
    		"value": "The Champ Tee keeps you cool and dry while you do your thing. Let everyone know who you are by adding your name on the back for only $10."
    	},
    	{
    		"attribute_code": "tax_class_id",
    		"value": "2"
    	},
    	
    	{
    		"attribute_code": "color",
    		"value": "52"
    	}
    ]
  }
}

Response

{
    "id": 2079,
    "sku": "MS-Champ",
    "name": "Champ Tee",
    "attribute_set_id": 2,
    "price": 25,
    "status": 1,
    "visibility": 4,
    "type_id": "simple",
    "created_at": "2017-11-29 20:40:07",
    "updated_at": "2017-11-29 20:40:07",
    "weight": 0.5,
    "extension_attributes": {
        "website_ids": [
            1
        ],
        "category_links": [
            {
                "position": 0,
                "category_id": "11"
            },
            {
                "position": 1,
                "category_id": "12"
            },
            {
                "position": 2,
                "category_id": "16"
            }
        ],
        "stock_item": {
            "item_id": 2079,
            "product_id": 2079,
            "stock_id": 1,
            "qty": 10,
            "is_in_stock": true,
            "is_qty_decimal": false,
            "show_default_notification_message": false,
            "use_config_min_qty": true,
            "min_qty": 0,
            "use_config_min_sale_qty": 1,
            "min_sale_qty": 1,
            "use_config_max_sale_qty": true,
            "max_sale_qty": 10000,
            "use_config_backorders": true,
            "backorders": 0,
            "use_config_notify_stock_qty": true,
            "notify_stock_qty": 1,
            "use_config_qty_increments": true,
            "qty_increments": 0,
            "use_config_enable_qty_inc": true,
            "enable_qty_increments": false,
            "use_config_manage_stock": true,
            "manage_stock": true,
            "low_stock_date": null,
            "is_decimal_divided": false,
            "stock_status_changed_auto": 0
        }
    },
    "product_links": [],
    "options": [],
    "media_gallery_entries": [],
    "tier_prices": [],
    "custom_attributes": [
        {
            "attribute_code": "description",
            "value": "The Champ Tee keeps you cool and dry while you do your thing. Let everyone know who you are by adding your name on the back for only $10."
        },
        {
            "attribute_code": "color",
            "value": "52"
        },
        {
            "attribute_code": "category_ids",
            "value": [
                "11",
                "12",
                "16"
            ]
        },
        {
            "attribute_code": "options_container",
            "value": "container2"
        },
        {
            "attribute_code": "required_options",
            "value": "0"
        },
        {
            "attribute_code": "has_options",
            "value": "0"
        },
        {
            "attribute_code": "url_key",
            "value": "champ-tee-small"
        },
        {
            "attribute_code": "tax_class_id",
            "value": "2"
        }
        
    ]
}

Create a configurable product tutorial

A configurable product is an item that requires the customer to choose one or more ‘options’ prior to purchase.

For example, when buying shoes, the customer needs to select what shoe size they want to buy. Many clothing items may well have both colour and size choices that have to be made by the customer.

Resources

https://rezolve.com/rceapidocs/swagger-products/

Step 1. Plan the product

To create a configurable product programmatically, you’ll need to know the following:

  • The attribute names and values defined in the attribute set assigned to the configurable product.
  • The categories numbers assigned to the configurable product.
  • Which attributes to use as the configuration options.

Since this tutorial uses the sample data, we can take advantage of the options that the Top attribute set provides. This attribute set contains attributes that describe the fabric, sleeve length, and other characteristics that are specific to clothing. It also includes EAV attributes such as size and color, which are commonly available to all types of physical products.

The size of the t-shirt will be the configurable aspect of this product. Therefore, we’ll create a simple product for each size (Small, Medium, and Large).

Define product characteristics

The following table lists the general characteristics of men’s t-shirt we’re creating. These items are among those listed on the New Product page in Admin when the Top attribute set is selected.

Characteristic Description
Attribute Set Top
Product Name Champ Tee
SKU MS-Champ
Price 25.00
Tax Class Taxable Goods
Weight 0.5
Categories Men, Tops, Tees
Visibility Catalog, Search
Material LumaTech
Pattern Graphic Print
Color Gray
Size Configurable in small, medium, or large
Description The Champ Tee keeps you cool and dry while you do your thing. Let everyone know who you are by adding your name on the back for only $10.

A merchant typically provides the product name, SKU, price, weight, and description. The other characteristics are defined by the system.

Find the system-defined values

We’ll make several calls to find the values needed to create the product

Get the attribute set ID

The sample data provides multiple attribute sets, including Default, Top, and Bottom. To assign the Top attribute set to the product, we need to know the corresponding attribute_set_id.

Use the following call to search for the attribute set named Top.

Endpoint

GET /rest/<store_code>/V1/eav/attribute-sets/list?
searchCriteria[filter_groups][0][filters][0][field]=attribute_set_name&
searchCriteria[filter_groups][0][filters][0][value]=Top&
searchCriteria[filter_groups][0][filters][0][condition_type]=eq

Response
The attribute_set_id for the Top attribute set is 9.

{
    "items": [
        {
            "attribute_set_id": 9,
            "attribute_set_name": "Top",
            "sort_order": 0,
            "entity_type_id": 4
        }
    ],
    "search_criteria": {
        "filter_groups": [
            {
                "filters": [
                    {
                        "field": "attribute_set_name",
                        "value": "Top",
                        "condition_type": "eq"
                    }
                ]
            }
        ]
    },
    "total_count": 1
}

Get the list of attributes defined in an attribute searchCriteria

Use the GET V1/products/attribute-sets/:attributeSetId/attributes call to return information about the attributes defined in the Top attribute set.

Endpoint

GET /rest/default/V1/products/attribute-sets/9/attributes

Response

The response contains almost 3,000 lines. The following table provides a summary of the attributes that are relevant in this tutorial.

Admin label Selected value Attribute ID attribute_code Attribute value
Tax Class Taxable Goods 132 tax_class_id 2
Visibility Catalog, Search 99 visibility 4
Material LumaTech 136 material 148
Pattern Graphic Print 152 pattern 196
Color Gray 93 color 52
Size Not applicable 141 size 168 (small), 169 (medium), 170 (large)

The attribute ID and value numbers might be different on your installation. Check the values carefully before using them in your calls.

Get the list of category values

You must assign the product to one or more categories to enable customers to find the product by browsing. We’ll assign the Champ Tee to the Men, Tops, and Tees categories.

Use the following call to search for all categories (id is greater than or equal to 0).

GET /rest/default/V1/categories?
searchCriteria[filter_groups][0][filters][0][field]=id&
searchCriteria[filter_groups][0][filters][0][value]=1&
searchCriteria[filter_groups][0][filters][0][condition_type]=gte

Note that women’s tops and tees have different ids than men’s tops and tees. The values for men’s clothing are:

  • Men – 11
  • Tops – 12
  • Tees – 16

Step 2. Create the configurable product

We have the information we need to create the Champ Tee configurable product.

The sample payload does not contain the price or the size. These attributes will be defined in the simple products.

The visibility attribute is set to 4, meaning the product can be found by browsing or searching. This value will be changed for the simple products.

Before you using this code sample, verify that the attribute values are the same in your installation.

Endpoint

POST /rest/default/V1/products

Payload

{
  "product": {
    "sku": "MS-Champ",
    "name": "Champ Tee",
    "attribute_set_id": 9,
    "status": 1,
    "visibility": 4,
    "type_id": "configurable",
    "weight": "0.5",
    "extension_attributes": {
    	"category_links": [
    		{
    			"position": 0,
    			"category_id": "11"
    		},
    		{
    			"position": 1,
    			"category_id": "12"
    		},
    		{
    			"position": 2,
    			"category_id": "16"
    		}
    	]
    },
    "custom_attributes": [
    	{
    		"attribute_code": "description",
    		"value": "The Champ Tee keeps you cool and dry while you do your thing. Let everyone know who you are by adding your name on the back for only $10."
    	},
    	{
    		"attribute_code": "tax_class_id",
    		"value": "2"
    	},
    	{
    		"attribute_code": "material",
    		"value": "148"
    	},
    	{
    		"attribute_code": "pattern",
    		"value": "196"
    	},
    	{
    		"attribute_code": "color",
    		"value": "52"
    	}
    ]
  }
}

Response

{
    "id": 2078,
    "sku": "MS-Champ",
    "name": "Champ Tee",
    "attribute_set_id": 9,
    "price": 0,
    "status": 1,
    "visibility": 4,
    "type_id": "configurable",
    "created_at": "2017-11-29 19:57:20",
    "updated_at": "2017-11-29 19:57:20",
    "weight": 0.5,
    "extension_attributes": {
        "website_ids": [
            1
        ],
        "category_links": [
            {
                "position": 0,
                "category_id": "11"
            },
            {
                "position": 1,
                "category_id": "12"
            },
            {
                "position": 2,
                "category_id": "16"
            }
        ],
        "stock_item": {
            "item_id": 2078,
            "product_id": 2078,
            "stock_id": 1,
            "qty": 0,
            "is_in_stock": false,
            "is_qty_decimal": false,
            "show_default_notification_message": false,
            "use_config_min_qty": true,
            "min_qty": 0,
            "use_config_min_sale_qty": 1,
            "min_sale_qty": 1,
            "use_config_max_sale_qty": true,
            "max_sale_qty": 10000,
            "use_config_backorders": true,
            "backorders": 0,
            "use_config_notify_stock_qty": true,
            "notify_stock_qty": 1,
            "use_config_qty_increments": true,
            "qty_increments": 0,
            "use_config_enable_qty_inc": true,
            "enable_qty_increments": false,
            "use_config_manage_stock": true,
            "manage_stock": true,
            "low_stock_date": null,
            "is_decimal_divided": false,
            "stock_status_changed_auto": 0
        },
        "configurable_product_options": [],
        "configurable_product_links": []
    },
    "product_links": [],
    "options": [],
    "media_gallery_entries": [],
    "tier_prices": [],
    "custom_attributes": [
        {
            "attribute_code": "description",
            "value": "The Champ Tee keeps you cool and dry while you do your thing. Let everyone know who you are by adding your name on the back for only $10."
        },
        {
            "attribute_code": "color",
            "value": "52"
        },
        {
            "attribute_code": "category_ids",
            "value": [
                "11",
                "12",
                "16"
            ]
        },
        {
            "attribute_code": "options_container",
            "value": "container2"
        },
        {
            "attribute_code": "required_options",
            "value": "0"
        },
        {
            "attribute_code": "has_options",
            "value": "0"
        },
        {
            "attribute_code": "url_key",
            "value": "champ-tee"
        },
        {
            "attribute_code": "tax_class_id",
            "value": "2"
        },
        {
            "attribute_code": "material",
            "value": "148"
        },
        {
            "attribute_code": "size",
            "value": "91"
        },
        {
            "attribute_code": "pattern",
            "value": "196"
        }
    ]
}

Step 3. Create the simple products

The payloads for creating a simple product and a configurable product are identical, with the following exceptions:

  • The simple product sku appends the configurable option (the size in this tutorial) to the configurable product sku.
  • The name indicates the size.
  • The type_id is set to simple.
  • The visibility is set to 1, indicating the simple product should not be displayed on the store.
  • The price and size attributes are specified.

Although it’s not required, the simple product payload also includes stock_item information. By default, the RCE store hides out-of-stock items, so adding stock will make the Champ Tee visible on the website.

Create the first simple product

Before you using this code sample, verify that the attribute values are the same in your installation.

Endpoint

POST /rest/default/V1/products

Payload

{
  "product": {
    "sku": "MS-Champ-S",
    "name": "Champ Tee Small",
    "attribute_set_id": 9,
    "price": 25,
    "status": 1,
    "visibility": 1,
    "type_id": "simple",
    "weight": "0.5",
    "extension_attributes": {
    	"category_links": [
    		{
    			"position": 0,
    			"category_id": "11"
    		},
    		{
    			"position": 1,
    			"category_id": "12"
    		},
    		{
    			"position": 2,
    			"category_id": "16"
    		}
    	],
    	"stock_item": {
    		"qty": "10",
    		"is_in_stock": true
    	}
    },
    "custom_attributes": [
    	{
    		"attribute_code": "description",
    		"value": "The Champ Tee keeps you cool and dry while you do your thing. Let everyone know who you are by adding your name on the back for only $10."
    	},
    	{
    		"attribute_code": "tax_class_id",
    		"value": "2"
    	},
    	{
    		"attribute_code": "material",
    		"value": "148"
    	},
    	{
    		"attribute_code": "pattern",
    		"value": "196"
    	},
    	{
    		"attribute_code": "color",
    		"value": "52"
    	},
    	{
    		"attribute_code": "size",
    		"value": "168"
    	}
    ]
  }
}

Response

{
    "id": 2079,
    "sku": "MS-Champ-S",
    "name": "Champ Tee Small",
    "attribute_set_id": 9,
    "price": 25,
    "status": 1,
    "visibility": 1,
    "type_id": "simple",
    "created_at": "2017-11-29 20:40:07",
    "updated_at": "2017-11-29 20:40:07",
    "weight": 0.5,
    "extension_attributes": {
        "website_ids": [
            1
        ],
        "category_links": [
            {
                "position": 0,
                "category_id": "11"
            },
            {
                "position": 1,
                "category_id": "12"
            },
            {
                "position": 2,
                "category_id": "16"
            }
        ],
        "stock_item": {
            "item_id": 2079,
            "product_id": 2079,
            "stock_id": 1,
            "qty": 10,
            "is_in_stock": true,
            "is_qty_decimal": false,
            "show_default_notification_message": false,
            "use_config_min_qty": true,
            "min_qty": 0,
            "use_config_min_sale_qty": 1,
            "min_sale_qty": 1,
            "use_config_max_sale_qty": true,
            "max_sale_qty": 10000,
            "use_config_backorders": true,
            "backorders": 0,
            "use_config_notify_stock_qty": true,
            "notify_stock_qty": 1,
            "use_config_qty_increments": true,
            "qty_increments": 0,
            "use_config_enable_qty_inc": true,
            "enable_qty_increments": false,
            "use_config_manage_stock": true,
            "manage_stock": true,
            "low_stock_date": null,
            "is_decimal_divided": false,
            "stock_status_changed_auto": 0
        }
    },
    "product_links": [],
    "options": [],
    "media_gallery_entries": [],
    "tier_prices": [],
    "custom_attributes": [
        {
            "attribute_code": "description",
            "value": "The Champ Tee keeps you cool and dry while you do your thing. Let everyone know who you are by adding your name on the back for only $10."
        },
        {
            "attribute_code": "color",
            "value": "52"
        },
        {
            "attribute_code": "category_ids",
            "value": [
                "11",
                "12",
                "16"
            ]
        },
        {
            "attribute_code": "options_container",
            "value": "container2"
        },
        {
            "attribute_code": "required_options",
            "value": "0"
        },
        {
            "attribute_code": "has_options",
            "value": "0"
        },
        {
            "attribute_code": "url_key",
            "value": "champ-tee-small"
        },
        {
            "attribute_code": "tax_class_id",
            "value": "2"
        },
        {
            "attribute_code": "material",
            "value": "148"
        },
        {
            "attribute_code": "size",
            "value": "168"
        },
        {
            "attribute_code": "pattern",
            "value": "196"
        }
    ]
}

Create the other simple products

Repeat the call with the following changes to the payload:

Attribute Medium Value Large Value
sku MS-Champ-M MS-Champ-L
name Champ Tee Medium Champ Tee Large
size 169 170

Step 4. Define configurable product options

Now that we’ve created all the Champ Tee products, we need to assign size as the configurable attribute and link the simple products to the configurable product.

Set the configurable attribute

The POST V1/configurable-products/:sku/options call assigns the specified attribute_id to be the configurable attribute. Specify the sku of the configurable product in the URI.

The value assigned to the value_index must be unique within the system.

Endpoint

POST /rest/default/V1/configurable-products/MS-Champ/options

Payload

{
  "option": {
    "attribute_id": "141",
    "label": "Size",
    "position": 0,
    "is_use_default": true,
    "values": [
      {
        "value_index": 9
      }
    ]
  }
}

Response

A configurable option ID number, such as "335".

The call to link a simple (child) product to the configurable product accepts only one childSku value. You must repeat this call for the MS-Champ-M and MS-Champ-L products.

Endpoint

POST /rest/default/V1/configurable-products/MS-Champ/child

Payload

{
	"childSku": "MS-Champ-S"
}

Response

true

Verify this step

  • Log in to the RCE  and select Catalog > Products. Click on the Champ Tee configurable product and expand the Configurations section.
  • Call GET /V1/products/MS-Champ. The response includes the configurable_product_options and configurable_product_links arrays.
 
...
"configurable_product_options": [
    {
        "id": 338,
        "attribute_id": "141",
        "label": "Size",
        "position": 0,
        "values": [
            {
                "value_index": 168
            },
            {
                "value_index": 169
            },
            {
                "value_index": 170
            }
        ],
        "product_id": 2078
    }
],
"configurable_product_links": [
    2079,
    2080,
    2081
]
},
...

Step 5. Create the personalization option

Let’s add a text box to the product page that allows the customer to add his name (up to 15 characters) to the back of shirt.

The product_sku is the sku of the configurable product. The sku specified in the payload is a string that is appended to the product_sku when a customer decides to purchase this option. Likewise, the price supplied in the payload is added to the configurable product price.

Endpoint

POST /rest/default/V1/products/options

Payload

{
  "option": {
    "product_sku": "MS-Champ",
    "title": "Add Your Name (Max 15 Characters)",
    "type": "field",
    "sort_order": 1,
    "is_require": false,
    "price": 10,
    "price_type": "fixed",
    "sku": "Personalized",
    "max_characters": 15
  }
}

Response

{
    "product_sku": "MS-Champ",
    "option_id": 7,
    "title": "Add Your Name (Max 15 Characters)",
    "type": "field",
    "sort_order": 1,
    "is_require": false,
    "price": 10,
    "price_type": "fixed",
    "sku": "Personalized",
    "max_characters": 15
}

Single SKU update

The following call asynchronously changes the price of the product that has a sku of sku1

PUT <host>/rest/<store_code>/async/V1/products/sku1

Request Data

{
  "product": {
    "price": 29
  }
}

Response

{
    "bulk_uuid": "fbfca270-7a90-4c4e-9f32-d6cf3728cdc7",
    "request_items": [
        {
            "id": 0,
            "data_hash": "9c1bd4bfd8defcc856ddf129cc01d172625d139d5f7dcf53b6cb09a0e9a843a3",
            "status": "accepted"
        }
    ],
    "errors": false
}

Bulk SKU update


Updating Stock and Price can also be done using the BULK update APIs

Get stock item for each product

Product 1

GET <host>/rest/V1/stockItems/test1%22

Product 1 Response

{
   "item_id":1,
   "product_id":1,
   "stock_id":1,
   "qty":1,
   "is_in_stock":true,
   "is_qty_decimal":false,
   "show_default_notification_message":false,
   "use_config_min_qty":true,
   "min_qty":0,
   "use_config_min_sale_qty":1,
   "min_sale_qty":1,
   "use_config_max_sale_qty":true,
   "max_sale_qty":20,
   "use_config_backorders":true,
   "backorders":0,
   "use_config_notify_stock_qty":true,
   "notify_stock_qty":1,
   "use_config_qty_increments":true,
   "qty_increments":0,
   "use_config_enable_qty_inc":true,
   "enable_qty_increments":false,
   "use_config_manage_stock":true,
   "manage_stock":true,
   "low_stock_date":null,
   "is_decimal_divided":false,
   "stock_status_changed_auto":0,
   "extension_attributes":[
      
   ]
}

Product 2

GET <host>/rest/V1/stockItems/test2

Product 2 Response

{
   "item_id":2,
   "product_id":2,
   "stock_id":1,
   "qty":1,
   "is_in_stock":true,
   "is_qty_decimal":false,
   "show_default_notification_message":false,
   "use_config_min_qty":true,
   "min_qty":0,
   "use_config_min_sale_qty":1,
   "min_sale_qty":1,
   "use_config_max_sale_qty":true,
   "max_sale_qty":20,
   "use_config_backorders":true,
   "backorders":0,
   "use_config_notify_stock_qty":true,
   "notify_stock_qty":1,
   "use_config_qty_increments":true,
   "qty_increments":0,
   "use_config_enable_qty_inc":true,
   "enable_qty_increments":false,
   "use_config_manage_stock":true,
   "manage_stock":true,
   "low_stock_date":null,
   "is_decimal_divided":false,
   "stock_status_changed_auto":0,
   "extension_attributes":[
      
   ]
}

Update stock by request

PUT <host>/rest/async/bulk/V1/products/bySku

Payload

[
   {
      "product":{
         "sku":"test1",
         "name":"Test1",
         "attribute_set_id":4,
         "status":1,
         "visibility":4,
         "price":30,
         "type_id":"simple",
         "extension_attributes":{
            "stock_item":{
               "item_id":1,
               "product_id":1,
               "stock_id":1,
               "qty":20,
               "is_in_stock":true
            }
         },
         "custom_attributes":[
            
         ]
      }
   },
   {
      "product":{
         "sku":"test2",
         "name":"Test2",
         "attribute_set_id":4,
         "status":1,
         "visibility":4,
         "price":50,
         "type_id":"simple",
         "extension_attributes":{
            "stock_item":{
               "item_id":2,
               "product_id":2,
               "stock_id":1,
               "qty":70,
               "is_in_stock":true
            }
         },
         "custom_attributes":[
            
         ]
      }
   }
]