# MX\_ERRNOMSG
> [HTML Version](mx_errnomsg.htm)
**xcall MIAMEX, MX\_ERRNOMSG, errno, message**
MX\_ERRNOSMG (MIAMEX 86) returns the operating system’s text message associated with the specified operating system error code (aka **errno**).
**Parameters**
_errno_ ([Num](num.htm.md)) \[in\]
is the error number for which you want the message. Note that many MIAMEX functions return operating system errors as negative numbers; these should be converted to absolute value before passing to this function. See History, below.
_message_ ([String](string.htm.md)) \[out\]
returns the error message.
**See Also**
• [ERRMSG](errmsgsbr.htm.md) for information relating to displaying the text corresponding to ASB error numbers.