SAP Message WRF_PRC_CON021 - Change contract type &1 in OTB reservation header

Diagnosis This value contract was defined as OTB-relevant in Customizingfor the OTB check. For value contracts of this kind, however, "OTB Reservation at HeaderLevel" must be set as the Check Level for the contractreservation. Procedure In Customizing for the OTB check for this contract type, change thecontract reservation to "OTB Reservation at Header Level".