How To Fix T5129 - Work center ID &1 could not be saved on terminal

SAP Error Message - Details

• Message type: E = Error

• Message class: T5 - SAPphone: Messages for telephony

• Message number: 129

• Message text: Work center ID &1 could not be saved on terminal

What causes this issue?

The work center ID, which was generated in the SAP system, could not be
entered in the registry of your computer.
This may be because you are using an old SAPGUI version.

How to fix this error?

You should use SAPGUI version 4.5A or later.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.