I have defined in Fin cust group as: 099 and would like to link in kind of transaction as below

Control Account:199901 (Regional)
Dimension:0110

Control Account:199902 (Retentionl)
Dimension:0110



Above customer is linked with customer master form 5(099)

While booking the project finance transactions I want to set options to either regional or retention account . how and where to set.

I don't want to disturb mu customer group. it should be as 099.

It is possible to have only one ledger account as control account for a group. Alternatively you can have different dimensions for regional and others. However the ledger account would remain the same.

Regards,
Rajasekhar