We have SQL Server 2005 SP4, using merge replication.
We started getting this error when the subscribers try to replicate (not all of them but most):
The process could not deliver dummy update at the 'Publisher'. (Source: MSSQL_REPL, Error number: MSSQL_REPL-2147200993)
We tried to 'reinitialize' one of the subscribers but that doesn't help. It starts applying the schema and seems do that fine, but when it comes time to download new changes it gets the error.