HP 83751A Programming Manual page 233

Exponent too large
The magnitude of the exponent was larger than 32000 (see IEEE
488.2, 7.7.2.4.1).
-124
Too many digits
The mantissa of a decimal numeric data element contained more
than 255 digits excluding leading zeros (see IEEE 488.2, 7.7.2.4.1).
Numeric data not allowed
A legal numeric data element was received, but the device does not
accept one in this position for the header.
Suffix error
This error, as well as errors -131 through -139, are generated
when parsing a sufhx. This particular error message should be
used if the device cannot detect a more specific error.
- 1 3 1
Invalid suffix
The SUEX does not follow the syntax described in IEEE 488.2,
7.7.3.2, or the suffix is inappropriate for this device.
- 1 3 4
Suffix too long
The suffix contained more than 12 characters (see IEEE 488.2,
7.7.3.4).
-138 Suffix not allowed
A suffix was encountered after a numeric element which does not
allow suffixes.
Character data error
This error, as well as errors -141 through -149, are generated
when parsing a character data element. This particular error
message should be used if the device cannot detect a more specific
error.
-141 Invalid character data
Either the character data element contains an invalid character or
the particular element received is not valid for the header.
Error Messages
4-11