Summary

A read-only volume cannot be modified.

Workaround

Try the following:

• If you would like to modify a document on a read-only document, then you will have to migrate the document to another volume.
• If this issue occurs when modifying or deleting an index card template, then you must check whether a document assigned to the index card template resides on a read-only volume. If this is the case, then you must clear the read-only option for the volume to which the document belongs before you will be allowed to modify the index card template.