trying to import customer master data using Customers v3 entity in d365. while importing customer account need to be auto generated.
when i try to import customer master using excel with single line of data is getting imported. in that customer account is auto generated successfully.
but when i try to import multiple lines the following error occurs.
Failed to insert record into staging table. The keys of the record are CUSTOMERACCOUNT, DEFINITIONGROUP, EXECUTIONID, PARTITION. Duplicate records must be removed from the file prior to import.-The duplicate key value is (5637144576,in xxxfile)
'0' 'Customers V3' record(s) inserted in staging.
1. need to know because of customer account auto generation the above error occurs.
2. someone give me solution how to import customer master data with customer account auto generation.
