Invoice is not paid in agency or freelance work: how to use proof of performance

Agency, consultancy and IT disputes often arise from unclear scope, missing approvals or undocumented additional requests. The file should contain the proposal, specification, milestones, change requests, tickets, time records, versions, acceptances and emails. Whether German service-contract or work-contract rules apply depends on what was promised. Invoices should transparently reflect agreed items and periods. A general statement that the customer is "not satisfied" should be made specific, but it should not be ignored. For the specific issue “how to use proof of performance”, this requirement should be recorded in the review note with its date and supporting evidence.

For “how to use proof of performance”, the starting point is not the reminder stage but a verified set of facts. The reviewer records the legal basis of the claim, contracting party, amount, due date, receipt and payments before drawing a legal or operational conclusion. In “how to use proof of performance”, this control determines whether the standard workflow applies or an individual review is required.

A claim does not automatically fail because no signed contract exists. Depending on the transaction, formation and terms may be shown by offer and acceptance, purchase orders, emails, chat messages, delivery, use, partial payment or other conduct. Proving price, scope, term and extras may be more difficult. Contemporaneous documents should be preserved chronologically and inconsistencies identified openly. For a high-value or seriously disputed claim, a legal evidence review is advisable before court action. For “how to use proof of performance”, the workflow should continue only after ownership, deadline and the exception route are clearly set in the system.

The rule should not exist only in a manual. The system should define a trigger, case owner, deadline and escalation path, making it clear why the case was processed, paused or transferred. For “how to use proof of performance”, quality control should reconcile the balance and underlying entries once more against the original evidence.

If the customer disputes performance, scope, quality or price, another standard reminder will not resolve the issue. The file needs the contract or order, specification, acceptance, delivery evidence, time records, correspondence, variations and a specific response to each objection. Undisputed and disputed amounts should be separated. Debt collection can structure the out-of-court exchange; where a substantial legal or factual dispute remains, the creditor should assess whether an ordinary court action is more suitable than the gerichtliches Mahnverfahren (German court payment-order procedure). In “how to use proof of performance”, this control determines whether the standard workflow applies or an individual review is required.

For larger portfolios, apply the rule consistently while allowing justified exceptions. Defined thresholds, a documented exception route and sample controls help prevent automation from producing factually incorrect measures. The outcome for “how to use proof of performance” should record the current balance, next date, reason for the decision and responsible person. When an invoice remains unpaid, the amount, due date and receipt should be verified before any escalation.

An incorrect recipient, calculation error, missing mandatory item or duplicate posting should be resolved before further reminders. The correction must identify which invoice it replaces or amends; credits and replacement invoices should be linked clearly. Receipt and any new due date depend on the contract and the type of error and should not be assumed automatically. For alleged duplicate billing, compare service period, order number, invoice items and payments side by side. Only the reconciled balance belongs in collection. For “how to use proof of performance”, quality control should reconcile the balance and underlying entries once more against the original evidence.

A common mistake is to infer default directly from an open balance. Corrections, counter-rights and receipt issues must be checked first, and calculations should allow a third party to reconstruct every amount and period. For the specific issue “how to use proof of performance”, this requirement should be recorded in the review note with its date and supporting evidence.

The minimum file should contain the contract or order, invoice, evidence of delivery or performance, agreed payment terms, correspondence, reminder, bank or customer ledger, credit notes and objections. Depending on the case, acceptance records, time sheets, shipping data, termination notices, terms and security may be needed. Documents should be named chronologically and stored without alteration. A short factual summary identifying unresolved points reduces queries and prevents inconsistent information from reaching the debtor, collection provider or court. The outcome for “how to use proof of performance” should record the current balance, next date, reason for the decision and responsible person.

The article therefore leads to a reviewable decision rather than a blanket measure. Once the claim and evidence are clear, Fortis Inkasso GmbH & Co. KG can take the next out-of-court step; objections should first be assessed legally. For “how to use proof of performance”, the workflow should continue only after ownership, deadline and the exception route are clearly set in the system.