In Red Hat Satellite 6 pulp3 content prepare failing with error `No service found matching your parameter 'pulpcore-api'`

Issue

• In Red Hat Satellite 6. pulp3 content prepare failing with error No service found matching your parameter 'pulpcore-api'

# satellite-maintain content prepare
Running Prepare content for Pulp 3
================================================================================
Enable applicable services:

Enabling the following service(s):                                    [FAIL]
No service found matching your parameter 'pulpcore-api'
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Scenario [Prepare content for Pulp 3] failed.

The following steps ended up in failing state:

  [service-enable]

Resolve the failed steps and rerun the command.

If the situation persists and, you are unclear what to do next,
contact Red Hat Technical Support.

In case the failures are false positives, use
--whitelist="service-enable"