Software⏱️ 1 min read📅 2026-06-03
How to Fix: Another Repeated column in mapping for entity error
Learn how to fix: Another Repeated column in mapping for entity error.
Quick Answer: Try checking your system settings or restarting.
The error "Repeated column in mapping for entity" occurs when a column is mapped multiple times in the entity's mapping configuration. In your case, the issue lies with the `customerId` column in the `Sale` entity. To resolve this, you need to add the `insert=
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