https://userapps.support.sap.com/sap/support/knowledge/en/3679093
3679093 - Program CRMS4_SERVORD_BDR_GENERATE not create BDRs using selection parameter "BDR...
When executing program CRMS4_SERVORD_BDR_GENERATE and using the selection parameter "BDR Creation Horizon", no BDRs are generated.