Solution : https://service.sap.com/sap/support/notes/566566 (SAP Service marketplace login required)
Summary :
This SAP Note addresses the failure of RFC with specific errors indicated by syslog R49, CPIC return code 027, and SAP return code 456, attributed to TCP package losses during connection setup. Recommended actions include thorough network checks for package drops and using transaction SMGW for managing connections. For non-functional links appearing as 'UNDEF_TYPE' in SMGW, the connection needs to be inspected and manually deleted using the gwmon tool or directly via SMGW depending on the version. Proper follow-up through system tools is advised to ensure stability and system integrity.
Key words :
terms r49 cpic rc 027 sap rc 456 reason, call gwmon pf=<instanceprofile>, prerequisites tcp packages disappear, 'undef_type' system type entry, cpic return code 027, sap return code 456, 'undef_type' system type, operating system level, clients' -> 'delete client', select 'goto' -> 'logged
Related Notes :
| 1333483 | Timeout during allocate of a registered program |
| 581509 | Reasons for "timeout during allocate" |