Hey @Saurabhkumarkunwar I would suggest to please consider the solution provided by @rob_marshall first if the Main Channel & LOB are going to remain constant. However, if in your case, the new LOBs or Channels are being created on ad hoc basis then as you have done so far: 1. Create a numbered list, just like you've done already. 2. Create a list property "LOB". 3. Map this new LOB list property with the LOB column from your csv while importing data. 3. In you import definition, select "Combination of Properties" as items uniquely identified by. Attaching your import screenshot with my comments for your reference. Thanks, Shrankhla
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