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1003E: Duplicate data ID

What does this mean?​

Error code 1003E: "Duplicate data ID" indicates that an inbound message resolved to more than one record in SyncHive.

How does SyncHive handle it?​

The message is not saved to the SyncHive data store and becomes a stuck message.

When does this happen and what can I do about it?​

This happens when a connector incorrectly maps identifiers to a message, causing it to match multiple records. Each message must resolve to exactly one record. The connector will need to be updated to resolve the issue.