Integration Failure Monitor "System. Argument Exception: An Item with same key has been been added

Integration Failure Monitor "System. Argument Exception: An Item with same key has been been added

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Product version:

6.5 Update 6 Patch2  

Problem statement :

Product update stucked with error message on Integration Failure Monitor from SAP to iVend “System. Argument Exception: An Item with same key has been already been added. 
 

Proposed solution:

Suggest customer to check master data udf integration screen and  user defined field in iVend.If there are two udfs with same name in  SAP however in iVend UDF there is one field with same name. 
Below are the query require to run to delete duplicate entry from SAP 
For Found duplicate entry against udf. 
SELECT * FROM "@CXS_UDFINTG" WHERE "U_CXS_UDF"='U_Des' 
 
Create Backup Table 
 
CREATEs TABLE CXS_UDFINTG_TempINC0011586 AS (SELECT * FROM "@CXS_UDFINTG") 
 
 
After Backup delete one entry.