The earliest sequence for the requested sources was not found in the replicated data table.
This depends on values of DWFLAGS in the CAPI_CONNECTION parameter in the DBMOVER configuration file. See the PowerExchange Reference manual for details of DWFLAGS and its default values. Specifically, if the WARN ON CHANGE DATA LOST positional flag is not set to Y then MSSQL Capture extract fails, otherwise a warning is issued and processing continues.
The transaction retention period for the distribution DB might be insufficient. See the PowerExchange Reference manual for details on the CAPI_CONNECTION for MSSQL.