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QuickBooks Online Sync Error: String length specified does not match the supported length. Min:0 Max:21 supported. Supplied length:XX

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Kelly H.
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Error

String length specified does not match the supported length. Min:0 Max:21 supported. Supplied length:XX

Explanation

This error occurs when a vendor credit or an offline payment in Bill.com is trying to sync to QuickBooks Online (QBO) but the reference number is great than 21 characters.

Solution

Edit the vendor credit or offline payment reference number in Bill.com to be less than 21 characters, save, and sync.