Does anyone know what a TranStatus of Incomplete in the tpoReceiverLog table means?

SOLVED

We have some, less than 100, records in the tpoReceiverLog table that show a status of 1, which vListValidationString says is Incomplete.  The RcvrKey 's do not exist in tpoReceiver, so I am suspecting that they are somehow orphaned records in the system.  I have tried the obvious things I could think of to try to recreate a scenario to produce the behavior, but have had no luck yet.  I am hoping someone here has seen this before and can point me toward a possible cause.

Thanks.