Hi Bhavana,
- In your case you need to select the previous version which is before RFC lookup change, Version 2 is RFC lookup so you need to select version 1 of the mapping object.
- And then change the emergency requirement and transport to QA and production.
- After transporting the emergency change to production, you can select the version 2 which is RFC lookup change and add the emergency requirement change or Add the RFC lookup logic to latest mapping which version 3 of the object, it is based on which one takes less time.
- To select the previous version you can refer this WIKI How to revert to a previous version of a Message Mapping in XI-PI? - Process Integration - SCN Wiki
- You can refer this link to understand clearly Versioning in Transports - Enabling Application-to-Application Processes - SAP Library
Regards,
Praveen.