The ALE Basis Customizing data configures the distribution technically:
Distribution models (logical level), in which the sender-recipient relationships for messages are defined
Partner profiles (physical communication level)
RFC destination for synchronous BAPI calls, and
ALE tools, for example to send IDocs to specified recipients (listing), or to change IDoc data from one value to another (data conversion).
SAP provides two tools to ensure the consistency of this data:
Converting ALE Basis Customizing Data
This tool adjusts the data in distributed system landscapes.
ALE Basis Customizing Data Check Center
The Check Center checks the consistency of your ALE basis customizing data.