Hi,
Seems to be strange. The message VL633 will be issued only in decentralised WM as mentioned in the KBA: 1459993 - Error message VL633 occurs in transaction VL09
If the LIKP-VLSTK is marked with C and VL633 is issued even though LE-IDW is not active, you may check for OSS notes (I couldnt find any) or raise an OSS ticket to SAP.
Regards,
AKPT