MFA4001E CA/LIBRARIAN ERROR REQ=aaaa RC=nnn

An internal CA/Librarian error occurred while processing the FAIR API request identified as: aaaa={OPN or LOC or MOD or REC or CLS} The return codes are described in the CA licensed documentation CA/Librarian File Access Interface Routines Guide. A partial list is provided below:

REQ RC Description
OPN 1 Invalid filename or unauthorized
  2 DDname missing
  8 Invalid parameter
  9 Not enough storage to process
LOC 1 Required module not found
  2 Caller not authorized for request
  6 Disk access failure
  7 Format error on access
  8 Invalid parameter
  9 Not enough storage to process
MOD 1 No modules found
  2 Caller not authorized for request
  3 Module not archived
  6 Disk access failure
  7 Format error on access
  8 Invalid parameter
  9 Virtual storage shortfall
REC 1 End of module
  6 Disk access error
  7 Format error on access
  8 Invalid parameter
  9 Virtual storage shortfall
CLS 81 Close failed