Needs (payed) help for custom Mollie-SEPA-Payment Integration

[claude27]

Hello,

I am looking for paid support with implementing Mollie SEPA Direct Debit payments in Aimeos based on TYPO3 12.

Credit card payments via Mollie are working, but unfortunately SEPA payments via Mollie are not implemented in Aimeos so far.

Despite many attempts, I haven’t been able to get this working myself. Mollie keeps returning API errors such as
“The payment method is not activated on your account. Field: method.”,
even though SEPA is definitely activated in the Mollie account.

Additionally, I haven’t managed to properly log the API calls yet, so I can’t provide meaningful debug output to Mollie support.

I’m simply more of a TYPO3 developer than a PHP developer, and unfortunately the Aimeos developers were not able to help me further with this.

Current setup:

• TYPO3 12.x.

• Aimeos 2024/2025.x.

• PHP 8.3.

• The existing Omnipay integration does not sufficiently cover our SEPA use case.

What is needed – summarized by ChatGPT

• A cleanly integrated payment module / payment provider for Aimeos that:.

• supports Mollie SEPA Direct Debit, including mandate handling.

• uses Mollie API v2.

• correctly processes webhooks (pending → paid / failed / canceled).

• properly maps payment states to Aimeos order statuses.

• supports test and live mode.

• optional: refunds via Mollie.

• is implemented in a TYPO3- and Aimeos-compliant way (no quick hacks).

If you’re interested, I can provide full access, including a ddev environment and Git repository.

The customer is a German NGO.

Feel free to forward this request or recommend contacts or places where I could ask as well.

Best regards from Munich,
Claude