Have a look at this web page for integration with Infor M3:
http://www.integrationwizards.com/m3_overview.html
Options that are available include SOAP web services that come standard within the Mendix modeler.
Hi there. To connect your Mendix app with the M3 ERP system, follow these steps:
1. Identify the data and processes you want to integrate.
2. Use M3 APIs: M3 offers RESTful APIs that you can call from your Mendix app.
3. Leverage ION: Infor's Intelligent Open Network (ION) can help manage complex integrations.
For connectors in Mendix, you’ll typically use REST services to call M3 APIs. Use the Mendix App Store modules for easier integration.
Hope this help for your ERP integration case.