If the invoice submission portal does not accept the buyer reference, please contact your contracting authority to make sure they gave you the correct information. Please also check whether you have entered the buyer reference correctly. For example, the error message may be triggered by misplaced hyphens or extra spaces before or after the buyer reference.
If you didn’t make a mistake and can’t find a solution with the contracting authority, the contracting authority should forward the issue to the Federal Government’s Central Finance Office (Zentrales Finanzwesen des Bundes, ZFB).
