HP ESA-E Series Programmer's Manual page 383

Error Messages
-199 to -100: Command Errors
-114
Header suffix out of range
The value of a header suffix attached to a program
mnemonic makes the header invalid.
-161
Invalid block data
A block data element was expected, but was invalid (see
IEEE 488.2, 7.7.6.2). For example, an END message was
received before the end length was satisfied.
-101
Invalid character
A syntactic command contains a character which is
invalid for that type. For example, a header containing
an ampersand, SETUP&. This error might be used in
place of error numbers -114, -121, -141 and some
others.
-141
Invalid character data
Either the character data element contains an invalid
character or the particular element received is not valid
for the header.
-121
Invalid character in number
An invalid character for the data type being parsed was
encountered. For example, an alpha in a decimal
numeric or a "9" in octal data.
-171
Invalid expression
The expression data element was invalid (see IEEE
488.2, 7.7.7.2). For example, unmatched parentheses or
an illegal character.
-103
Invalid separator
The parser was expecting a separator and encountered
an illegal character. For example, the semicolon was
omitted after a program message unit.
-151
Invalid string data
A string data element was expected, but was invalid
(see IEEE 488.2, 7.7.5.2). For example, an END message
was received before the terminal quote character.
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