To define or set auto generated SKU Code prefix for Items, follow the steps given:
Step 1:
Select the Inventory module and then select the Create Items under the Item Details menu.
(Inventory-->Item Details-->Create Items)
Step 2:
Select SKU Code Prefix Settings option. Click on +SKU Code Prefix option. Select the Category, Sub
Category, Item Type and give the SKU Code Prefix then click on Save.
NOTE:
If SKU Code Prefix Settings are done, we need not to update the SKU Code of the Items manually,
it will be generated automatically according to the code prefix given when we add or create item.