I installed 12.0 XCOM and all worked well. I even did a transfer successfully. Except after the restart of XCOM, I get these messages:
IDC3302I ACTION ERROR ON SYSD.XCOM.RRQP.XCOMHIST.BK.G0156V00
IDC3309I ** RECORD X'0115279FCF' NOT WRITTEN. LENGTH INVALID
IDC3302I ACTION ERROR ON SYSD.XCOM.RRQP.XCOMHIST.BK.G0156V00
IDC3309I ** RECORD X'0115279FCF' NOT WRITTEN. LENGTH INVALID
IDC0005I NUMBER OF RECORDS PROCESSED WAS 14591
IDC0001I FUNCTION COMPLETED, HIGHEST CONDITION CODE WAS 8
Reviewed the output of the XCOMUTIL job used to REPRO the XCOMHIST and realized that the LRECL and BLKSIZE didn't match the one provided in our sample JCL. We asked the user to modify their JCL and after correcting the BLKSIZE the messages no longer occurred.