Error “No Standard Price Defined for This Product” When Adding Products

This error occurs when the product is not added to the Standard Price Book.

To resolve the issue:

1. Export your product data, including:
   • Product ID
   • Unit Price
2. Add a column for the Standard Price Book ID.
3. Insert records into the Price Book Entry object to create standard price entries for all products.
4. Ensure that:
   • The product is active
   • The price book entry is active

Once the Standard Price is defined, you can successfully add the product to a custom Price Book.

Note
Salesforce enforces a dependency where all products must first exist in the Standard Price Book before being used in custom Price Books or transactions.