Diagnosis
The following causes are possible:

• You attempted to assign the agent a reference agent with the
determination type &v1&. However, according to Customizing you can onlyuse this determination type for direct measurements.

• You have not yet specified a determination type.

Procedure
Depending on which of the above causes applies, do one of thefollowing:


• Delete the reference agent or change the determination type.


• Specify a determination type that requires a reference measurement.