Full Replication Fails With Error: "Replication Failed. because the backup schedule uses AD account or a local account from which the credentials cannot be automatically inherited". (4230187)

Full replication fails with the following error: 

The SOURCE server is joined to the domain, while the TARGET server is not joined.

This happens if:

1. A Domain account is specified as a Fallback account (Full Mode) option under Replication Mode in the Replication Console Properties.
2. A Domain account is specified in "Connect Using" under Replication Console Properties.

Since the target server is disjoined from the domain, it does not have a way to resolve domain user accounts.

Also, the Fallback account is used to replace the account in the backup scheduled tasks if these accounts cannot be replicated to the target console. If the backup schedule tasks use an AD domain account, local account or gMSA account that cannot be resolved by the target, a fallback account that can be resolved needs to be specified.

We recommend the following when replicating to a target server disjoined from the domain:

1. Create a local account on both SOURCE and TARGET servers with the same name and password.
2. Make these local accounts member of the local administrator groups on both servers.
3. Go to Replication Console Properties in your TARGET server.
4. Under replication mode, if using Full Mode option, specify the local account as a Fallback account.
5. In Connect Using, if you are logged on as the local account, select Use current account.
6. If you are not logged on as the local account, then specify the local account by selecting Use this account