Diagnosis
You want to create a document with repitition items, for which reasonyou assigned at least one repetition groupto a line item. The field for the repeitition group contains the value000 meaning the repetition group is blank. This repetition groupcannot be used - this entry is wrong.
INCLUDE NA_SYSADMIN1 OBJECT DOKU ID TX

Procedure for System Administration
INCLUDE FICA_NA_OSS OBJECT DOKU ID TX