Diagnosis
The formula is invalid. This can be caused by the following situations:

• Operation does not exist

Use only operations from the operation list.

• Parameters are incomplete

See operation documentation.

• Spaces are missing before and after each parameter

Make sure that there is a space before and after each parameter.

• Defined parameter cannot be found in the context

System Response
The system displays error messages.

Procedure
Fix the formula as described above.