Jobs that worked in prior releases may fail under r6 with a U0300 abend and DYL-031E WRNG.LEN.RECORD message.
This typically occurs when DCB information such as record length and/or block size is specified both in the JCL and on the FILE statement, but the values do not match.
Correct value in both locations or leave DCB information off the FILE statement and let VISION:Results acquire the information from the operating system.