user is unable to update SKU twice via headless API

Issue

• Steps to reproduce:
  1. Start Liferay DXP 7.4.
  2. Create a site by using a minium site template.
  3. Create an option with the name "City".
  4. Create a specification with the name "segment".
  5. Navigate to localhost:8080/o/api.
  6. Select the http://localhost:8080/o/api?endpoint=http://localhost:8080/o/headless-commerce-admin-catalog/v1.0/openapi.json
  7. POST/create a product (Request is attached). Note: Change the catalogid and optionid according to the environment.
  8. Product is created successfully with the provided SKU.
  9. Again, created the same product, and now changed the SKUs, price & cost values.
  Expected Result: At the second time, the prices of the product must be changed.
  Actual Result: It returns an invalid SKU while executing the request.
  
  

Environment

• Liferay DXP 7.4
• Commerce 4.0

Resolution

• To update the SKU of a product, we must first define the 'ERC' so that the request knows which product needs to be updated.

•  "skus": [
  {
  "cost": 1900000,
  "depth": 0,
  "discontinued": false,
  "discontinuedDate": "2023-03-15T10:08:25.198Z",
  "displayDate": "2023-03-15T10:08:25.198Z",
  "expirationDate": "2023-03-15T10:08:25.198Z",
  "externalReferenceCode": "AB-34098-789-N1",
  "gtin": "12341234",
  "height": 0,
  "manufacturerPartNumber": "12341234",
  "neverExpire": true,
  "price": 1900000,
  "promoPrice": 1900000,
  "published": true,
  "purchasable": true,
  "replacementSkuExternalReferenceCode": "SKU0111",
  "replacementSkuId": 33135,
  "sku": "Compass-Delhi",
  "skuOptions": [
  { 
  "key": "city",
  "value": "delhi"
  }
  ],
  "unspsc": "1234567890",
  "weight": 1.1,
  "width": 20.2
  }
  ]

Additional Information

• Unable to add SKU to the product via headless API