How to setup the scenario where if a user selects a cost codes the GL A/c should automatically get selected

Hi ​@Harry ,

Can you try below-

1. If you want the GL account to default automatically on lines (such as AP Bills, Purchase Orders, or Time Activities):
   • Using Non-Stock Items: Link an Item/Expense item to a Posting Class where the Expense Account is predefined, and assign the default Cost Code / Account Group to the item.
   • Cost Code Mapping: In Cost Codes (PM209500), you specify descriptions and budgeting levels, but standard GL account defaulting usually pulls from:
     • The Non-Stock Item (Posting Class)
     • The Project / Project Task settings
     • The Vendor location defaults

Hope above helps!!