Diagnosis
The Mobile Bridge is not active!
Without the Mobile Bridge the data would be extracted from the CRMdatabase but could not be send/written into the CDB.
Hence a Load in this circumstance could not be succesfully processedand system resources will only be wasted.

Procedure
Please activate the Mobile Bridge for the assigned mBDoc.
Start the Load again after the activation.
Hint:
Details for activation: see IMG 'Customer Relationship Management ->CRM Middleware and Related Components -> Mobile Scenario Setup ->Activate Mapping Functions'