COBCH1654 Should be elementary; MODE IS BLOCK assumed You have attempted to perform an ACCEPT or DISPLAY statement on a group item, but have specified an optional phrase that is
only applicable to elementary items.
COBCH1658 VALUE OF FILE-ID overriding ASSIGN A VALUE OF FILE-ID clause in the File Description entry is overriding the external-file-reference already specified in an
ASSIGN clause in the File Control entry.