Diagnosis
The field catalog of the condition technique does not allow this fieldto be considered for an external selection.

System Response
The function module '/SAPCND/MNT_CONVERT_RANGES_OW' or prestoredmodules ('/SAPCND/MNT_SELECT_OW', '/SAPCND/MNT_GET_WORKING_SET_OW' )were called incorrectly, and an exception is returned to the called.

Procedure
You may have to changed the field catalog in the USED_FOR_SELECT columnfor customer-specific fields. If applicable, remove the field first,and then add it again. Otherwise, adjust the calls to the relevantmodules.