If you get the following problem:
23900- IF COND(%SST(&SRCDTA 78 20) *NE '*/ ')
THEN(DO)
* CPD0895 30 Length and start position will extend past &SRCDTA.
It is most likely that you have not created the QCLSRC112 source file with the correct length.
As per the installation instructions, you need to create QCLSRC112 with a source length of 112 bytes.
CRTSRCPF mylib/QCLSRC112 RCDLEN(112) CCSID(285)