§ 77

The tenant may submit a written objection to the individual consumption accounts no later than 6 weeks after the account has been received by the tenant. In properties with tenant representation, the tenant representatives may object to the individual accounts on behalf of all tenants, cf. 1st sentence. The objection must specify the points on which the account cannot be approved. The landlord must bring the matter before the rent tribunal no later than 6 weeks after the tenant's deadline has expired if the landlord wishes to maintain their claim for additional payment according to the account.