NAT3551 in batch process

Hello Fellows,
Recently I installed Natural for VSAM stand alone I mean Natural for VSAM without Adabas so the whole system files are VSAM. I am testing a batch process and I’ve been receiving a NAT3551. That process is working in another environment.
The batch process access more than 15 DDMs and fails in a specific DDM but if I run a process which access those specific DDM and working well.
What do you think is going on?

Best Regards

I did a DDMs migrations from the Adabas file to VSAM file, I haven’t FDIC at the VSAM stand alone environment. I woulf like to know if I must recatalog the whole DDMs migrated?