SAP Message BCOM_EC_R123 - The download sequence could not be successfully completed

Diagnosis
When a scenario is downloaded, several RFC functions are called todownload the components involved (agent groups, and so on). These callsare framed by two RFC functions for starting and ending the downloadsequence, which guarantees that the download is complete. If thesequence is not ended properly, the objects downloaded cannot be usedin the active routing process.
An error occurred when the download sequence was ending.
The server concerned is '&V1&'.
Further information:
Message from external software component: &V2&
BCOM Rule-Based Routing Trace

System Response
The download is not valid on this server and must be repeated after thecause of the error has been removed.