Agilent Technologies 8712ET Programmer's Manual page 296

Error
Number
−180 Macro error — This error, as well as errors −181 through −189, are
generated when defining or executing a macro. This particular error
message should be used if the device cannot detect a more specific error.
−181
Invalid outside macro definition — Indicates that a macro parameter
placeholder ($<number) was encountered outside of a macro definition.
−183
Invalid inside macro definition — Indicates that the program message unit
sequence, sent with a *DDT or *DMC command, is syntactically invalid.
−184
Macro parameter error — Indicates that a command inside the macro
definition had the wrong number or type of parameters.
Programmer's Guide
Error Description
SCPI Error Messages
Command Errors
13-7