DC497043 with ADSOBCOM for a dialog that was not signed out in Endevor, The CV does not have either NDVR or NDVRMIS task.
Endevor has an Auto-Signout capability that can be employed to automatically Signout an entity on first modification implicitly. This would explain why it would be signed out without having either NDVR or NDVRMIS. Before compiling the dialog with ADSOBCOM compile it online with ADSC then compile it with ADSOCBOM.
https://docops.ca.com/ca-idms/19/en/using/using-ca-endevor-and-db-for-ca-idms/signin-signout-functions