Want to Change the Auto Accounting from a Constant value to Transaction type source for Receivable a

 Hi Guru's,

We have Implemented R12.1.3 version, and we are using Oracle Receivables, and the Invoice generation is automatic through Auto Invoice from Order management.

Our current Auto Accounting for Receivables is a Constant value, which is Trade receivables. Now the user wants if any Transactions done between the Intercompany, for those transactions the system has to pick the Intercompany Receivables account in place of Trade receivables, 

As we are using different Transaction type for Intercompany Receivables, we want to put the I/C Receivables Account in Transaction type and want to change the Auto accounting for Receivables as to pick from Transaction Type source.