5- 22 Keysight B2961A/B2962A SCPI Command Reference, Edition 6
Error Messages
B2961A/B2962A Specific Error
Error 873 Cannot save list sweep data
Error 874 Cannot save user-defined ARB data
Error 900 Internal system error
Error 951 Unsupported command
Specified command is not supported by B2961A/B2962A.