How To Fix TK508 - RFC access to & failed (server cannot be reached)

SAP Error Message - Details

• Message type: E = Error

• Message class: TK - Transport Organizer

• Message number: 508

• Message text: RFC access to & failed (server cannot be reached)

What causes this issue?

It was not possible to access &V1& via RFC because the connection could
not be established.
Possible cause: receiving gateway of &V1& is not active.

System Response

The request is rejected.

How to fix this error?

Check whether the CPIC connection to the global object server is still
functioning:
Call transaction <DS:TRAN.SM59>SM59</>.
Click on <LS>ABAP Connections</> and then <LS>GTADIR_SERVER</>.
With <LS>Test link</>, you can check whether the receiving gateway is
answering or find the link error.
If necessary, contact your system administrator.
Repeat the action if the gateway becomes active again.

Error message extract from SAP system. Copyright SAP SE.