Method: CONVERT_PR_TO_PO
Method: IF_FIP_MANAGE_PURCHASE_ORDER~READ_OPEN_PO_BY_ELEMENTS
Method: IF_FIP_MANAGE_PURCHASE_ORDER~READ_OPEN_STO_BY_ELEMENTS
Method: IF_FIP_MANAGE_PURCHASE_ORDER~READ_PO_BY_ID
Method: CALCULATE_VALUES_VIA_ES
Method: PREPARE_MIRROR_EXPOSURE
Method: READ_FLOW