Pass empty value to Person field in SharePoint List

[jsangerman]

I am using a Form to collect data and then passing the results to a SharePoint list. The form is used for user support and to gather multiple uses. If the responder says the ticket is for access, they see question 4 and can decide whether the access is for themself or someone else. The latter shows them question 5.

Because the input is variable, I am using a condition to populate a variable with the input to my SharePoint list. If the request is not for access, that variable (AccessUser) will have 0 length when passed to the SharePoint list. That is leading to an error:

The specified user could not be found.
clientRequestId: 10902738-6902-42f0-ad97-df5d054a2f76
serviceRequestId: 10902738-6902-42f0-ad97-df5d054a2f76

Here's a portion of the flow that I need to function properly. How can I conditionally pass no user ID to a person column in a SharePoint List?

I prefer not to use a Condition to have conditional Create Item actions. I'd prefer to use conditions to populate variables that are then passed through a single Create Item action.

[PrasadAthalye]

You can build a null check expression in the claims mapping. 

if(equals(variables('Accessuser'), null), null,variables('Accessuser'))

[jsangerman]

I added that, but am still getting the same error.

It seems to not like a null value for a person. Which is strange because if I leave that column blank in the action, it works fine. So nothing = success but null = error

[jsangerman]

Here's the input to that action.

[PrasadAthalye]

This seems to be a limitation of Update Item action that you can not pass empty or null value. Refer following thread.

https://powerusers.microsoft.com/t5/General-Power-Automate/How-to-clear-SharePoint-quot-Person-or-gr...

You can use REST API call to update the item where you can implement null check.