Importing and Exporting Cases with XI
In Customizing you can use Business Add-Ins (BAdIs) to influence how case information is imported and exported through XI. Also you can use these BAdIs to convert (map) case information to XI messages during the export and import. XI allows data exchange between SAP systems and from SAP systems to non-SAP systems via XML messages.
In addition to these BAdIs, you can use the available BAdIs to:
Monitor imported and exported case information to see if there have been any errors
Use various BAdIs to perform customer enhancements for XI case imports and exports
Manually export cases on an as-needed basis
You can find the Customizing for each of these BAdIs and the additional
functions under 
Customer Relationship Management
Case Management
Extended Customizing
Case Import and Export with XI
.
Prerequisites
An XI server must be set up and used to exchange the information from system to system.
Example
A customer has two CRM systems and wants to export information about a case from one system to another. In CRM system A, a case is exported and is converted into an XI message. The XI message is sent to an XI server, and this message is then sent to CRM system B. There the case is converted into an internal structure and it is then imported in CRM system B.