error in workflow

“Incorrect parameter for the function SysDictEnum.value2Index”

i got this error while config the workflow configuration.

in workflow configuration for a template while modifying it is showing this error.

Can you elaborate it…

By doing what modification you are getting this error

like when - writing some instruction or modifying some field - which help in understanding your problem…

At what point in your config did you get the error? Is this a custom template or a standard template which you are using?