SAP Message WRF_PRC_CUST014 - Deletion of entry &1 not allowed

Diagnosis You tried to delete an entry for an order type with the activevalue 'Take accuont of OTB bucket'. This is not allowed. System Response Procedure First change your settings for the OTB check under'OTB Check Settings'. Here, deactivate the header check for the ordertype in question. OTB Check Settings