A cost gap is a difference between the costs expected under a commodity trade contract and the figures presented during execution or invoicing. Controlling that gap requires the agreed terms, supporting documents, variance and approval to sit in the same deal record.

The useful moment to surface a difference is before a payment decision.

One deal can accumulate several versions

The recap records the commercial agreement. The contract formalises the terms. Operations receives the bill of lading and certificates of quality and quantity. A provisional invoice brings those facts into a payment process.

When each stage is managed separately, figures can change without the next person understanding why. A spreadsheet may include a demurrage adjustment that the contract record does not explain. An email approval may never reach the person reviewing the invoice.

The challenge is preserving the relationship between the records.

Give the contract a stable place in the workflow

The finalised contract should anchor the commercial record. Define the required fields, who can change them and how changes become visible after execution begins.

Shipping documents should be attached to that record with a clear reference. The invoice reviewer should be able to see which contract and shipment evidence support the figures under review.

This does not require every action to be automated in the first release. A reliable record with explicit manual checks can be a useful starting point.

Treat a variance as work that someone owns

An exception needs more than a coloured flag. It needs an explanation, evidence, an owner and a decision.

A cost gap record can include:

  • The expected amount and the figure presented.
  • The contract term or cost basis used for comparison.
  • The reason for the variance, where known.
  • Supporting shipment or cost documents.
  • The reviewer responsible for accepting or resolving it.
  • The decision and its place in the payment approval history.

The process should also make clear whether the reviewer can resolve the issue directly or needs a commercial decision from the trader.

Keep approval and payment execution distinct

A workflow can hold payment approval until an unresolved variance has been signed off. That control must be defined against the client’s authority structure and integration arrangements.

It does not mean the workflow system independently executes a bank payment. In the approach Serpro scopes, payment initiation and tracking use the client’s agreed banking integration. The solution does not execute payments itself.

Making that boundary explicit helps operations, finance and technical teams agree the responsibilities of each system.

Close the deal with the record intact

Closure is the point to check that payables, receivables and acknowledgements are accounted for. Preserve the final commercial record and the evidence behind its decisions.

A later reviewer should be able to follow the deal without reconstructing it from inboxes.

Serpro builds commodity trade workflows in phases, starting with the deal record and manual-assist controls. Further automation follows the agreed process and integration scope.

Estimate the review effort without promising the result

A trading operation reviewing 180 deals a month at an assumed 35 minutes per deal uses 105 hours of review capacity. If connected evidence and software-prepared comparisons reduced the average to 15 minutes, the illustrative difference would be 60 hours each month.

At $45 per loaded hour, that is $2,700 of potential capacity value. It is a planning scenario, not measured Serpro performance. It excludes software and implementation costs, and it says nothing about the financial value of an individual variance caught.

Keep those two questions separate: how much review effort could be released, and what operational risk needs a stronger control? A low-frequency exception can still justify a clear approval boundary without an invented savings figure.

Define the document assistance’s evidence contract

an invoice comparison should show which fields it compared and where they came from. The contract version, invoice reference, extracted charge and supporting shipment record should be accessible to the reviewer.

An apparent difference may reflect a timing issue, an agreed commercial adjustment or a document that has not yet been attached. the document assistance should prepare a question rather than imply that every variance is an error.

For clause review, establish the approved playbook and who maintains it. Legal needs the changed language and the reason it was flagged. A risk label alone does not provide enough context for a contractual decision.

Plan integration around ownership

The deal workspace may coordinate information without becoming the system of record for every financial transaction. Agree which records belong to the ERP, which belong to the trade workflow and which originate in a document repository.

Banking integration requires particular clarity. A recorded approval, a payment instruction and a bank-confirmed settlement are distinct states. The workflow should not display a settled deal merely because someone approved an invoice.

Keep deployment requirements concrete

For commercially sensitive terms and counterparties, discuss identity boundaries, network access, encryption requirements and retention. If on-premises deployment is required, include document processing and model endpoints in the architecture conversation.

The question is not simply whether the application can run on a server. It is who operates it, who applies updates, where evidence moves and how the organisation restores the record after a failure.

A useful first release

Choose a representative deal type and follow it from recap through closure. Validate the fields, required documents, exception owners and approval states with the people who perform the work. Expand to other deal types after the first operational record holds together.