Hello Praveen,
First thing please check below parameters are set or not which is mentioned in the below troubleshooting guide
Link:
Parameters:
" These time values are defined in milliseconds [ms], where 300000 [ms] equals 5
[min], and 2592000000 [ms] equals 30 days. The relevant SAP Note is 791379 - XI
Adapter Service Properties Documentation.
How to set the storage period:
For processed asynchronous messages, specify this period (in ms) in SAP
NetWeaver Administrator Configuration Management Infrastructure Java
System Properties Services XPI Adapter: XI
Properties: xiadapter.inbound.persistDuration.default and
xiadapter.outbound.persistDuration.default.
For synchronous messages, specify this period (in minutes) in SAP NetWeaver
Administrator Configuration Management Infrastructure Java System
Properties Services XPI Service: Messaging System
messaging.syncMessageRemover.checkInterval.
"
Second thing what I have observed when we search for messages using UDMS is time frame you are giving to search the messages( that is start and end time ).
Lesser the time difference or time frame more the chances of getting messages.So my suggestion is to just give a try by searching the message with minimal timeframe( within couple of hours )
Hope this helps..!
Regards,
Shri