You have the following exception during the removal of the TIBCO EMS plugin from the domain.

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Error [DomainUtility] AESDKJ-0000 Validation Failed: No matching EMS instance found in the domain.
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You have the following exception during the removal of the EMS instance from the machine tab of Admin GUI.

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There are applications deployed on the following machines. Please go to the application and remove the dependencies before removing these machines.
Use DomainUtility to remove dependencies on "TIBCO Servers" application.
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Cause :
During the execution of domainutility when you provide hostname value between the MachineName tag of RemoveJMSServer.xml template.

The domainutility application is not able to resolve the hostname to its IP address.
 

Unable to remove EMS server from TIBCO Administrator domain.

OS: All TIBCO Administrator: All

Please provide the fully qualified domain name (FQDN) value for the MachineName tag of the RemoveJMSServer.xml template.

Note: Sequence to remove the EMS server from domain 1) Remove EMS Plugin using Domainutility 2) Remove the EMS instance from Machine tab of Admin GUI.  
 

https://kb.iu.edu/d/aiuv