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IRS Transaction Codes and Errors
These are common three digit IRS transactions codes associated with your tax return and tax refund. Not all IRS are listed, but these are common codes given by the IRS. The IRS uses these to track actions that are posted to your account on the Master File and they may appear on your account transcript or return transcript.
A complete list of IRS Transaction Codes and Error Codes that are used are available in Document 6209 on the IRS.gov website.