This case study shows how Alzchem future-proofed its SAP-integrated invoice processing over many years with xSuite — from its S/4HANA migration to e-invoicing readiness. It makes the tangible benefits clear: faster processes, greater transparency in accounts payable, and a stable solution fully embedded in SAP. Readers also get practical insights into how new e-invoicing formats such as XRechnung and ZUGFeRD can be implemented in a real SAP environment. It is a worthwhile download for anyone who wants to see how SAP transformation, compliance, and efficient invoice automation can be successfully combined in practice.