3046317 - Error "The following error message comes from the external data service: status:500 body:Internal Server Error" encountered when refresh the model based on import data connection to Business ByDesign Analytics in SAP Analytics Cloud (SAC)

When refresh the import job in the model based on import data connection to Business ByDesign Analytics, the following error message appears:
"The following error message comes from the external data service: status:500 body:Internal Server Error".

• SAP Analytics Cloud Enterprise Edition.
• Business ByDesign.

SAP Cloud for Planning, sc4p, c4p, cforp, cloudforplanning, Cloud for Analytics, Cloud4Analytics, CloudforAnalytics, Cloud 4 Planning, BOC, SAPBusinessObjectsCloud, BusinessObjectsCloud, BOBJcloud, BOCloud., SAC, SAP AC, Cloud-Analytics, CloudAnalytics, SAPCloudAnalytics,Error, Issue, System, Data, User, Unable, Access, Connection, Sac, Connector, Live, Acquisition, Up, Set, setup, Model, BW, Connect, Story, Tenant, Import, Failed, Using, Working, SAML, SSO, sapanalyticscloud, sap analytical cloud, sap analytical cloud, SAC, sap analyst cloud, connected, failure, stopped , KBA , sac tenant data issue , model gives error, refuses to refresh , LOD-ANA-AQU , Import Data Connections (Acquiring Data) , Problem