Two Account Keys for one Condition type

Hi Gurus

My Client have standard sales process and salable return process, in salable return Credit note is generated. the Pricing Procedure is same for both process Pricing Procedure (ZOR).

for normal sales PP condition maintianed is as below

Condition type               Acckey

ZPTS                              Z01

now while doing Salable return process Client wants to hit different GL a/c (acckey-ZCR) in same PP ZOR i.e

Salable return (proposed)

Condition type               Acckey

ZPTS                              ZCR

how do i configure this, should i create routine with help of ABAPER or is there any sandard solution. Client doesn't want another PP.

Please Help