SKU (price) values will only be updated

Issue

• How exactly does API behave, will it drop all the existing mapping ( Variant> Price> Options) and create again?

Environment

• Liferay DXP 7.4
• Commerce 4.0

Resolution

• The SKU (price) values will only be updated with respect to the option value of each product.
  
  1. Create a new Option “City” with 3 values (Mumbai, Delhi, and Pune), and mark it as SKU Contributor (through UI).
  2. Send a POST Call to http://localhost:8080/o/headless-commerce-admin-catalog/v1.0/products with the JSON (attached sample json which I created for testing), changing the catalogId and optionId. 
  3. Check that the product was created, and check that the createDate for CPInstances and CommercePriceEntry are the current date
  4. Send the same POST Call, this time altering the “price”, “cost”, “promoPrice” and “basePrice” of both SKUs
  5. Check the CPInstance’s and CommercePriceEntry’s createDate in the database entries.
   
  Both had unchanged createDates, everything stayed the same except for the changed fields. 
  

  ---

  There’s no reason why the createDate would be changed by the POST call. Therefore, the existing Mappings will not be dropped, they will only be updated.
   Pricing Info gets updated here:
  https://github.com/liferay-commerce/liferay-portal/blob/bf9b8657efe5ca1a0766d81c9fc35edc731e0aae/modules/apps/commerce/headless/headless-commerce/headless-commerce-admin-catalog-impl/src/main/java/com/liferay/headless/commerce/admin/catalog/internal/util/v1_0/SkuUtil.java#L423
   And will ultimately call: 
  https://github.com/liferay-commerce/liferay-portal/blob/bf9b8657efe5ca1a0766d81c9fc35edc731e0aae/modules/apps/commerce/commerce-price-list-service/src/main/java/com/liferay/commerce/price/list/service/impl/CommercePriceEntryLocalServiceImpl.java#L768