Diagnosis
A number of substances that are relevant for substance volume trackingwere found for the material &V1&. This is not permitted.

Procedure
Check the specification-material assignment in the specificationdatabase. Correct the relevant assignments.
In some situations you may intend to determine only specialspecification-material assignments and have therefore implemented acustomer-specific function module.
In this case, check the function module that you specified inCustomizing under Function for Determiningthe Substances for the Material, and adapt it so that only onesubstance is ever determined for a material.