How to resolve "String or Binary Data Would Be Truncated" Error?

The "String or Binary Data Would Be Truncated" error in Salesforce Marketing Cloud usually occurs when you're trying to insert or update data in a database field, and the data you're attempting to insert exceeds the maximum allowed length for that field.

How to resolve this?

1. Check the data you’re trying to insert or update and make sure it fits within the field length limits. You can do this by going to the Data Extension itself and checking the field properties.
2. Adjust the Data Extension. If you need to store longer data, increase the field length in the Data Extension. This is done by editing the Data Extension’s field property. If increasing the field length isn’t an option, shorten the data to fit within the existing field length.

You can do this via Email Studio > Email > Subscribers > Data Extension > find the Data Extension that needs to be modified. Click on Edit Fields and modify as necessary.

If the problem persists after these checks, you might need to contact SFMC support for further assistance.

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