I’m facing an issue with Sales Invoice generation after integrating Subscription Plans into it.
The Sales Invoice in ERPNext is originally designed to handle item-based billing, but in our use case, we’ve added plans to display which subscription plan the customer has selected and its respective cost.
After adding a script to include the plan total along with the items total in the invoice, everything appears correct on the UI. However, during submission, the system throws an error due to a GL Entry mismatch.
ERPNext’s GL generation logic only creates entries for items, and since the plan total isn’t part of the standard item entries, it results in a Total Difference error during validation.
What I’ve Tried:
-
Created a custom server script to adjust GL entries — didn’t work, as ERPNext performs the difference check during submission.
-
Attempted to override the core GL generation logic through a custom app — became complex and unstable.
