Structure of Control Records (SAP Library

Structure of Control Records

The control record consists of a field string for the structure edidc. The relevant fields are listed below; all other fields should be left with their initial values.

List of fields for the control record

Field	Description	Comment
mestyp	Logical message type. Conveys the business meaning of the message.	Mandatory field
idoctp	Basic structure of the IDoc. Identifies the layout set that uses this message.	Mandatory field
cimtyp	Structure of customer extension. If the customer extends an SAP basic structure, he must give a name to the structure of his extension.	Mandatory field if customer has made an enhancement. Otherwise initial.
rcvprt	Partner type of the receiver; "LS" (i.e. logical system) for ALE.	Optional field. See below.
rcvprn	Partner number of the receiver; the logical system for ALE.	Optional field. See below.
rcvpfc	Partner function of the receiver; normally initial for ALE.	Optional field. See below.

When the receiving system has been determined from the distribution model, it can be written to field rcvprn. Then field RCVPFC must be filled with "LS" (for logical system). If necessary, the partner function can be written into the field RCVPFC. However, the partner function is not normally used in ALE. What is important, is that either both rcvprt and rcvprn are left empty or that both are filled. If rcvprt and rcvprn are passed with their initial values, the receivers are determined entirely in the ALE layer.