Change in requisitioner name in CPPR scenario

hello all,

we are using CPPR scenario, when the PR is pushed to srm in the inbound XML I am getting the same requistioner name as in the PR but when the sc is created the requistioner name changes to PISUPER user

can any one help me with functional module or class where this requistioner name changes on the SRM side

thanks

Sreenivasa chary