Thanks Dick ! but he doesn't know
If he is unable or unwilling to do the research in the documentation, he (or possibly you) should open an issue with CA Support.
They can tell you what needs to be done - if it can be done.
When you mention "retrieved" is the same thing as "check out"? Can the module not be simply "checked in"?
The Endevor admin should be able to get these things done. . .