A PROC statement, other than a PROC statement on the first executable line of the CLIST, does not have a label. The CLIST cannot be executed.

PROC statements that are not on the first executable line of a CLIST are considered to be the first line of a subprocedure. As such, the PROC statement must have a label that can be used to call the subprocedure. To correct the CLIST, add a label to the PROC statement. For more information about subprocedures and PROC statements, see z/OS TSO/E CLISTs.