Step 1: Login Dell Boomi Platform using the below link
Step 2: Go to the Deploy tab as shown below
Step 3: Select the process to be undeployed as shown below:
Step 4: Go to the attachments tab and select the attached environment from where we need to undeploy the process
Step 5:Move the attached environment to unattached environments.
Step 6: Go back to deployments and the process gets undeployed.