Sorry - forgot to attach the screen shot!

Here it is

This error can mean that a field is being inserted twice. If that is the case, it is likely due to a customization that is inserting a field that was fixed in 2021r1.

I just went through and looked and removed the error it showed me at the bottom. It still is doing the same thing. I think i am going to have to delete the customization and start over. :/

Do you have a customization for mobile sales orders? Could it be the customer order number field? 

I had that issue.

I customized the sales order screen in the mobile app.. i too had a customer order number field and i removed it but i cant publish it until later today when everyone is out of the system. i already asked them to get out once this morning so i will wait this time I will publish it tonight and see if it worked and let you know. 

Thank you!

Hopefully that is all it is. 

Update: I published the customization that i removed the Inventory ID field and it works just fine now. :)