DFS4436I INSTANCE `yydddhhmmssth` OF DBD name IS ALREADY IN THE IMS CATALOG AND WAS NOT ADDED.

or

or
INSTANCE yydddhhmmssth OF PSB
name IS ALREADY IN THE IMS CATALOG
AND WAS NOT ADDED.

Explanation
 The IMS Catalog
already contained a root segment for the DBD or PSB name, and under
this root there was an existing DBD or PSB segment with time stamp yydddhhmmssth.
Because DBDs or PSBs with the same name and the same time stamp are
assumed to represent identical instances of the DBD or PSB, nothing
was added to the catalog.

System action
Processing continues. 

System programmer response
No action is required.

Module
DFS3PU00

DFS4436I INSTANCE yydddhhmmssth OF DBD name IS ALREADY IN THE IMS CATALOG AND WAS NOT ADDED.

Explanation

System action

System programmer response

Module

DFS4436I INSTANCE `yydddhhmmssth` OF DBD name IS ALREADY IN THE IMS CATALOG AND WAS NOT ADDED.