Purchase Requisition Authorization based on Storage Location

Hi MM Gurus,

Our client has got a specific requirement to control the security of purchase requsition creation, change and release based on the storage locations. We have found the authorization object M_BANF_LGO which is to restrict the access of PR based on storage location in purchase requsitions.

The issue is the purchase requsition BAPI does not check this authorization object as per standard SAP.

Does anyone know how to handle the security of purchase requsition based on storage location?

FYI - Our PR release strategy is at item level and not at document level.

Thanks,

Shekhar