Data Protection Central (DPC) is producing an Error 502 while accessing the UI after initial install

After install of DPC, when attempting to log in to the DPC UI, get an HTTP error 502.
After checking the DPC services, find several services in a filed state.

In the /var/log/dpc/elg/elg.log file, find errors similar to the following.

2021-02-16 15:35:57,340 ERROR main o.s.b.SpringApplication Application run failed
com.emc.clp.spi.UnavailableException: Unable to init ELG
...
Caused by: java.util.concurrent.ExecutionException: java.util.concurrent.CompletionException: java.lang.IllegalStateException: Could not create URI object: Illegal character in hostname at index 10: https://dp_central.lab.dell.com/pf-admin-api/v1/oauth/clients

An illegal character in the hostname of the DPC causes this.

To resolve this issue, re-deploy DPC with a hostname that has only supported characters.

In the example above, the hostname is "dp_central.lab.dell.com." An underscore "_" is not a supported character.
DPC hostname only supports the following criteria.

• Each element of the hostname must be between 1 to 63 characters long.
• The entire hostname, including the dots, cannot be more than 253 characters long.
• Valid characters are letters a to z, digits 0 to 9 and the hyphen "-," the hostname cannot start with a hyphen "-."
• Each element is separated by a dot.