Attempting to redefine a dtd shelf item that is currently in use.

#6129   Run-time catchable error

Attempting to redefine a dtd shelf item that is currently in use.

Additional Information

For DTDS Shelf item 'x'.
    or
For DTDS Shelf key 'Z'.

Explanation

It is not allowed to redefine an existing dtd shelf item while that DTD item is currently used for parsing a document.