SAP Message AJ731 - Access date for customer-defined access procedure is missing

Diagnosis
In operand &v1&, access control for thecustomer-defined access date was selected. However, a valid date couldnot be determined that can be used with operand access. The BAdI waseither not activated or an error has occurred in the BAdI specification.

Procedure
Check that the BAdI ISU_BI_SELCONTROL has been correctly implemented andactivated.