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How to resolve validation failure during Lacerte e-file: 601ERRV:8 Malformed Data

SOLVEDby Intuit3Updated December 13, 2023

This article explains how to resolve an e-file transmission error in Lacerte. The message says:

  • Validation Failure: Error 601: The Lacerte Electronic Filing Center is having difficulty recognizing the data you are sending. Please try sending the return(s) again. - 601ERRV:8 Malformed_1.0-?:? - Malformed Data

This error can be caused by data corruption in the tax return which will only show while in Batch Mode. To resolve:

  1. Go to an input screen where return information is entered.
  2. Hit Ctrl+W and Batch Mode will open.
  3. Remove any odd characters or wingdings.
  4. Do this for every screen where information is entered.
  5. Hit Ctrl+W again to exit Batch Mode and e-file the return again.


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