"error": "order.download.fail", "message": "Exception when converting HR to internal code "

Hello All,

Getting mistake during accumulation bid download from ECC to SAP DM.

Please advise.! Below is the error

"errorCode": "order.download.fail",
"message": "Exception erstwhile converting HR to interior codification ",
"messageI18nArguments": [],
"errorLocation": "INTERNAL_SYSTEM_ERROR",
"serviceName": "dme-demand-ms",
"eventType": "sap.dsc.dm.Order.Received.v2"