First VARY DMCL NC after an upgrade gets the following on the terminal where the command is issued:
Error Auditing/Building the new DMCL. BLDR returned a status of 04. See Log.
Release Number or OPSYS ID. Changed between current DMCL and New DMCL
On Log the message DB347015 appears.
To do the VARY DMCL NEW COPY both the current and the new DMCL must have been generated under the same release of IDMS.