Customers have the need to post to a various GL accounts when WIP is run for the Credit posting that it creates. The Credit posting account is derived from the Project Posting group.
The only place the Project Posting Group can be defined is on the Project Card. The user needs the ability to choose the Project Posting Group on the Scheduled Billings line to override/change the posting group for the specific scheduled billings
Users frequently want their revenue posted to different GL accounts the represent the type of revenue earned. The Credit posting of WIP is often related to revenue in some way and it is necessary for the user to have more control of the posting of the WIP account.