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The following diagnostic is generating:

efile: For Schedule IT BUS. Part 4, Business Sources, one or more 6-digit NAICS code(s) is missing.  This code is required by the state for this schedule.  Please review all business income activities/schedules (Sch C, Sch E, Sch F, K-1s, etc.) and confirm the NAICS codes are entered.  Alternatively, as in prior years, business activities can be manually entered and linked in the OH State Income screen. (ref. #54889)


We identified an issue on 3/23/2021 causing this diagnostic to persist even when the NAICS code has been entered for all activities. We anticipate the fix for this issue will be available on a release next week.

Until the update is available, using the Screen 50.121 method listed below will clear the diagnostic. Alternatively, if you have verified all NAICS codes are present, you can Disable E-file Diagnostic Error Checking to file the return.


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Please review the primary input screens 16,18,19, and 20.1, 20.2 and 20.3 for each activity to confirm the NAICS code has been entered. This is the preferred area to input the NAICS code tied to the OH IT BUS Schedule.

If you are using Screen 50.121 to enter the NAICS code:

Please verify that the Activity Number field is populated, then enter the Principal Business Code using the input field provided.



does the activity need to be schedule c??

Still getting diagnostic on this issue after adding this information.  Any other suggestions?

Same here, still getting the diagnostic after entering info.

still same diag  

Diagnostic does not clear