DirSync: Error when creating contacts for GAL Sync (4321414)

When trying to create contacts for GAL Sync the creation fails with the following message:

Write: Directory Operation Error (InvalidDNSyntax): 00002081: NameErr: DSID-03050F42, problem 2003 (BAD_ATT_SYNTAX), data 0, best match of:
    'CN=7959d2de-9fee-4d74-bc58-c292582ec5a0,OU=WSB,OU=Staging,DC=sb-target,DC=local'

• This can occur if you are using the following advanced Mapping for distinguishedName in your template. Example:
  • GetDn(NewGuid())
• This issue is caused by the presence of an active mapping for cn (Common Name) in the template, resulting in a collision with distinguishedName (Distinguished Name).

To resolve this issue:

• Either remove the cn (Common Name) mapping from the template
• Or revert the distinguishedName mapping to its default configuration.