During the CATTRS process, a CAT4541I message is issued.
When this message is issued.
- A gap was detected in the edit of GDG data sets. The GDG that is missing is the generation between the levels that are reported. This message serves only as a warning that a data set is not being processed for retention/movement. It may have been inadvertently scratched, or may be out-of-service.
- The message is issued because some of the data sets (those that are missing) are not FILESEQ=0001 but generally FILESEQ NOT= 0001. TLMSTRS only looks at the CDS, by default FILESEQ=0001, for retention. Therefore, since we only look at the CDS, any volumes that do not have this file as FILESEQ=0001 will be controlled by some other retention criteria.
- The position in the cycle is determined by create date and time. This is then checked against the generation number if the volume is a GDG to verify that they are also in order by creation date and time. The creation date and time check requires that a higher gdg generation be created after the previous generation, if not a warning is issued to alert the tape librarian.
It is just a warning and can be ignored. The solution is to suppress the messages using a CMSG parameter in TLMSIPO (CMSG=CAT4541I,MSG=SUP).