1940998 - SHADOW_IMPORT_INC: Duplicate key error during insert into table <table name>

SHADOW_IMPORT_INC phase results in the following error :

" duplicate key error during insert into table"

The following information is available in the log files.

Directory : */SUM/abap/log

Log file name : SHDALLIMP.ELG

Example of what the error might look like : 

4 ETW000 27 entries for T5BDRXT~ rejected - language not installed
(000F4*).
2EETW000 1 duplicate key error during insert into table T5BDRXT~ occured
4 ETW000 0 d / 0 i / 0 u / 1 = 100% ucf T5BDRXT~
4 ETW000 1 entry for T5BDRXT~ merged (___E4*); as part of view
V_T5BDRX.
4 ETW000 client 000: 27

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