Hi Rajagopal,
Kindly check out,whether your "Release Group-K" exits, if so, maintain only one group at a time,then maintain other parameters like Release Codes & follow up activities. After the simulation, also check out the assignment of your 'Release Group" & "Release Strategy" on
A. CL20n
B. CL24n
Hope, version active for PR's regards to your 'Document Type" is in place.
Test it & check out by creating test PR on ME51n/ME53n, if configuration is fine, then at " Item Details" you will find a View " Release Strategy"
Regards
Mani