SAP ALE API
ALE (Application Link Enabling) is the framework for distributing data between SAP systems using IDocs, according to a defined distribution model. As integration infrastructure, it keeps distributed SAP systems in sync.
Use ALE for reliable, asynchronous SAP-to-SAP distribution of master data and documents.
- ALE lets separate SAP systems share master data and transactions without a common database, by exchanging IDocs based on a…
- ALE (with IDocs) handles SAP-to-SAP distribution; EDI handles external partners (IDocs via an EDI subsystem); modern APIs (OData)…
- Logical systems identify participants.
- Watch out: Wrong logical-system assignment (esp. after system copy).
What ALE does
ALE lets separate SAP systems share master data and transactions without a common database, by exchanging IDocs based on a distribution model that defines who sends what to whom. It is how, for example, central master data is distributed to operational systems, or transactions flow between SAP systems.
Key concepts
- Logical systems identify participants.
- Distribution model (BD64): defines message flows.
- Partner profiles (WE20): inbound/outbound processing per partner.
- Message/IDoc types for each data kind.
ALE vs EDI vs API
ALE (with IDocs) handles SAP-to-SAP distribution; EDI handles external partners (IDocs via an EDI subsystem); modern APIs (OData) and cloud integration (Integration Suite) increasingly handle newer scenarios. In classic and hybrid landscapes, ALE remains a core mechanism for distributed SAP data.
When to use it
Use ALE for reliable, asynchronous SAP-to-SAP distribution of master data and documents. It builds on IDocs, so understanding IDoc structure and monitoring is a prerequisite.
Common pitfalls
- Wrong logical-system assignment (esp. after system copy).
- Incomplete partner profiles.
- Confusing ALE, IDoc and EDI roles.