SAP MDG: How to make Roles default for Customer & Supplier Change Request Type

Scenario: Process: Create a Class Method – DERIVE_DATA Code: METHOD if_mdg_bs_bp_access_handler~derive_data. DATA : lv_crtype TYPE usmd_crequest_type, lt_bp_role TYPE TABLE OF /mdgbp/_s_bp_pp_bp_role, ls_bp_role...