Go to SPRO path: SPRO > IMG > Quality Management > Quality planning > Basic data > Catalog > Define catalog Types
Check the following setting for your catalog, say for Catalog '1' .
This tick should be there.
Also check these things
- Whether all the CodeDroups (created in QS41) are in Released status?
- Are you trying for same Catalog (like '1') at both the places? i.e., QS41 and QS51?
- If nothing is left for checking then, look into SAP notes 1078292 and 1091604 in this context.
Regards
KJogeswaraRao