Including the AR control account in an Account Group is generally not recommended because AR accounts are system-controlled and tied to subledger integrity.
From experience, some business cases where this comes up include:
Trying to reflect AR balances in Project reporting (WIP/Revenue visibility)
Custom financial reporting where users want customer balances aligned with project data
However, it can lead to several issues:
Data integrity risks between AR subledger and GL/Project module
Double counting or misclassification in project reports
Unexpected results during releases and allocations
Potential reconciliation challenges between AR and Project balances
Typically, it’s better to use:
Revenue or WIP accounts mapped to Account Groups
Or reporting (GI/Reports) to combine AR and project data
So while it may seem useful for reporting, it often creates more complications than benefits.