Change Assistant Error

Error in EMHub error log:

<Stdout> <000000> <WARN [ACTIVE] ExecuteThread: ’0′ for queue: ‘weblogic.kernel.Default (self-tuning)’ EMF_CATEGORY – Unable to register peer com.peoplesoft.emf.peer:id=2 with the EMHub>

Error that PSAgent gives:
ERROR main EMF_CATEGORY – Error while connecting to ‘http://hrms:8000/PSEMHUB /hub’.
ERROR main EMF_CATEGORY – Error: Internal Exception: – Error registering peer
ERROR main EMF_CATEGORY – Error while connecting to server – retrying attempt 1

To fix this error, we need to reset GUID.
select GUID from PSOPTIONS
UPDATE PSOPTIONS SET GUID = ‘ ‘

We need to restart the application server and the web server.