Just when your publishing is going well you, experience a message indicating a document is in “Locked” status.
The document you are attempting to publish may be locked due to the author locking this document against another author’s edits and that may show as (Document locked by [name]). When a document is not locked it will appear with (Available) which indicates that a document is available for checkout and editing.
Please read on and refer to the steps outlined in the following article to help resolve this issue –
To learn even more, please refer to the Ancile uPerform Managing Content Manual – Chapter 6: Working With the Document Library.