User is getting error message Service cannot be reached if external alias references SICF service with underscore.
Solution
We are taking in assumption
- Service path in the ICF tree is called /sap/my_test
- External alias with the name /sap/my/test
- When you call the ICF path /sap/my_test, the system terminates the call with an HTTP return code 404 and the error message "Service cannot be reached".
You can solve this problem by updating SAP_BASIS Patch
SAPKB73112
SAPKB74007