Volume is past it's EXPDT yet still in a SCRATCH=NO status.

Document ID : KB000102166
Last Modified Date : 15/06/2018
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Introduction:
We have a volume that is using Date control for its retention. The EXPDT/Keepdate is a date in the past. Why is the volume still active within TLMS?
Background:
Volumes are not being scratched via the TLMSTRS scratch run.
Environment:
z/OS and TLMS.
Instructions:
After an execution of CATVMFV/CATVCVS(TLMS chaining report), we found that the volume in question was in the report with the following message: CAT6205W VSN=L12345 VOLCNT=002 VSN=L34567 VOLCNT=000 CHAINED VOLUMES VOLCNT SHOULD BE EQUAL * Since this volume is part of a chaining error, TLMSTRS will not process the volume till the chaining error is manually corrected.