Integrate Comarch XL With Inventory System

I need a solid, real-time bridge between my Comarch XL ERP and an external inventory management system. All critical flows—stock level updates, order tracking, supplier data, and full order management—have to move cleanly in both directions so numbers stay aligned across platforms without manual uploads.

API integration is my preferred route, so the job revolves around designing, coding, and deploying a secure set of endpoints (or leveraging existing ones) that push and pull the data Comarch XL exposes. Clear field mapping, error handling, and logging are mandatory because I want zero silent failures when large order batches hit the system.

Deliverables
• Production-ready API connector linking Comarch XL and the inventory app
• Configuration files or scripts needed to install and run it in my environment
• Brief technical documentation covering endpoint specs, authentication, and data mappings
• A round of end-to-end testing that proves stock, orders, and supplier records sync accurately

Acceptance criteria: every item created, updated, or closed in either system must reflect in the other within the agreed polling interval (or instantly if webhooks are available) and survive a 48-hour stress test without data loss.