DFS1047I label SYSMSG=DFLD LABEL NOT DEFINED IN EVERY PHYSICAL PAGE [name IN DPAGE].

Explanation

The DFLD label for SYSMSG (system message) must be defined for every physical page. The name IN DPAGE part of the message is printed if DPAGE is defined. The label is an externally defined name on the statement. If the label is omitted, an internal name is generated by the preprocessor.