Library /sys$common/syshlp/helplib.hlb  —  MACRO  /ALPHA  Error Messages, MACCASEMATCH
 Library macro name is spelled using different alphabetic case than
 in .MCALL directive or macro invocation.

    Error: There is an alphabetic case difference between that
    specified in the macro library and what you specified for the
    macro name.

    User Action: Check the case of the macro name in your source code
    and the case of the macro in the specified macro library.
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