Email and PDF orders into your ERP: what to verify before buying

This is about a customer's purchase order becoming your sales order. It is not supplier invoice processing or a WhatsApp bot that takes orders through a conversation. Operations or sales administration, working with IT, needs to remove transcription without losing commercial control.

Choose which part you need to buy

Compare three approaches using the same documents and business rules:

In Argentina, Bejerman describes an AI order manager through an OrderToB integration. Its page explicitly identifies these capabilities as third-party integrations. That is a reason to ask your ERP supplier first, not to assume they are already included in your installation.

“Automatic capture” also needs a precise definition. Vreo's specific product page for Mexico describes manually uploading a PDF or Word file, a reader configured for each customer format and human confirmation in Odoo. It says the feature neither monitors email nor reads scanned images. That scope may suit you, but it is different from processing a mailbox unattended.

Do not choose by the AI label. If a reader for repeated formats solves the task, ask to test that before adding components.

Decide which source wins when data disagrees

A document describes what a customer requests. It does not, by itself, authorize changing prices, creating products, replacing an address or bypassing approvals. Those rules must remain outside the email's free text.

Agree on these decisions with sales and IT:

• Customer and reference: how an order is linked to the correct account and how its external number is retained.
• Product: which mapping translates a customer's code into your SKU, the internal item identifier. A similar description does not authorize substitution.
• Unit: where the conversion between boxes, individual units or kilograms is defined. Missing conversions should stop automatic processing.
• Price and currency: which current price list or agreement is consulted and who resolves differences from the document.
• Delivery: which source validates address and availability. Reading a requested date is not a promise to meet it.
• Approval: who can authorize creation and which exceptions must hold it back.

A review screen should show the source document, extracted data and reason for each hold. A correction should retain who changed it and why. Do not automatically turn a one-off correction into a permanent commercial rule.

Received email is not confirmed order

The n8n Email Trigger IMAP documentation provides mailbox selection and attachment download options. That supplies a technical input, not commercial identity checks, approval or an ERP write operation.

Separate the states your team needs to see: received, review required, approved for registration and registered with an identifier. If the ERP supports drafts, specify whether the project stops there or also confirms orders. Invoicing, payment and dispatch are separate operations.

Ask for two additional controls:

• Forwarded and revised orders. A message identifier is not enough to identify the commercial order. A forwarded email can have a new identifier, while a correction can keep the same order number. Agree on a customer-and-reference key, retain versions and display changes before replacing quantities.
• Uncertain outcomes. If the connection drops during creation, check whether the order was saved before writing again. HTTP 202 means accepted for processing, not completed. If your interface uses that status, require a way to verify the eventual outcome.

An acknowledgment can say that a request was received. Confirming quantities, prices or delivery dates requires the agreed state and authorization. Do not combine these messages simply because the workflow can send email.

Put this acceptance test in the proposal

The following scenario is fictional. It is an acceptance test, not a customer success story.

Order P-42 requests two boxes of a product. The catalog identifies the item but does not define the number of units per box. An identical forwarded message arrives next. A later correction requests three boxes under the same reference.

The expected outcome is:

• The first document is held for an undefined unit conversion, rather than entered as two individual units.
• The forwarded message is associated with the same order and creates no additional record.
• The correction retains both versions and requires the quantity change to be reviewed.
• An authorized person validates the conversion, price and current version.
• The integration registers one approved version, returns a recoverable identifier and allows its lines to be checked in the ERP.

If the original order was already registered, its correction must follow the ERP's amendment procedure. Silently deleting evidence or creating another order is not an acceptable substitute.

Also test an unreadable document, an unknown customer and an interruption during creation. Agree in writing which outcomes prevent acceptance. A demonstration using one clean PDF does not cover these conditions.

Prepare an evaluation and measure the whole process

Prepare sample formats without confidential information, the ERP and version, document and line volumes, current steps and frequent exceptions. Do not send passwords or private pricing in the initial inquiry.

The proposal should separate configuration, integration, external services, human review and support. Measure total time to registration, corrections by field, duplicates and review time using comparable documents. Processing more files does not prove savings if staff must correct each one afterward.

DuoTach offers system automation and integration with n8n. We can evaluate the step between your mailbox and ERP. Feasibility and scope depend on the available interfaces, permissions and controls. Ask about order integration. This opens an inquiry form, not a meeting reservation.

Frequently asked questions