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|  | **FileName** | **CSTRING(MessageMaxlen), PRIVATE** |

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The **FileName **property contains the name of the file that produced the error. The SetFile and ThrowFile methods both set the value of the ErrorStatusGroup.FileName private property. The FileName value then replaces any %File symbols within the error message text.

MessageMaxlen is a constant EQUATE declared in ABERROR.INC.

**See Also:**     [[setfile  set the substitution value of the  file macro .htm|SetFile]], [[throwfile  set value of  file  then process error .htm|ThrowFile]]