SAP Message QI125 - Valuation &1 for sample &2 and confirmation no. &3 is not allowed

Diagnosis
You are confirming a valuation &V1& for the inspection characteristicwith the confirmation number &V3& and the partial sample &V2&. Thisvaluation is not allowed.

Procedure
Only the values 'A' (accepted) and 'R' (rejected) can be used asvaluations. Correct the confirmation record accordingly.