SAP applications enable customers to enhance application source code without making modifications and thus to meet customer-specific requirements that are not provided for in the standard shipment. The applications can use Business Add-Ins (BAdIs) for this purpose. Furthermore, if customers use applications that exchange messages by using XI, they can define data type enhancements for Integration Repository data types. Customers can use these enhancements to send additional data with a message and can access this data by using BAdIs. Please go through this link for further reference:
You can make the following enhancements to a data type:
· You can add elements and structures at the top hierarchy level as subelements of the root element.
· You can define attributes for the root element or its inserted elements.
· You can create elements and attributes at the top hierarchy level as optional fields only. You can create all other elements and attributes as often as you like.
· You can define your own facets for newly inserted elements or attributes in the Details column. This is not possible for SAP data type fields.
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