COPA requirements

Dear Experts,

I have followingrequirements :

I don’t wanted to do changes on the SD side.  Based on the reason code selected on the sales order push the values to COPA.

Requirement

1. Reason code A in sales order -->condition R100--> G/L account 1000A --> COPA—Discount
2. Reason code B in sales order--> condition R100--> G/L account 1000B --> COPA – Bonus.

I have done required setting of G/L account posting, but COPA it is going to only one. Since ZP00 and R100 are mapped to Gross sales.

Please let me know if this changes are possible in the COPA without creating new condition types.

Since i understand there is only one to one mapping for COPA field value to Condition type.

Thank you,

Shekhar.