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Bug report: 202 and 204 response result in error the data returned in the response is invalid

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Posted on by CU28111156-0

Let's assume you have a REST custom connector where you have PATCH operation. When that is called from a button, it is returning 202OK (also tested with 204) and error 'The data returned in the response is invalid' is showed in PowerApps.

Exactly the same service from the connector works in Flow. It seems that PowerApps care about the response and do not like 202/204 status coded for PATCH/PUT operations.

Can you please fix it, it is annoying.

Thank you.

Tomas

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Building Power Apps

PowerAppsError.jpg

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v-micsh-msft on at

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Re: Bug report: 202 and 204 response result in error the data returned in the response is invalid

I suspect the issue here should be caused by PowerApps can't handle the JSON data.

By the way, could you please take a look to see if the 202 and 204 response has been defined under the Response part when creating the Custom Connector in PowerApps?

Connector definition

If the corresponding response has been defined, then it should be available for PowerApps to handle the response.

For the current situation, please consider take use of Send Response to PowerApps with Microsoft Flow as a workaround.

Regards,

Michael

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Community Power Pla... on at

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Re: Bug report: 202 and 204 response result in error the data returned in the response is invalid

Hi @v-micsh-msft

Is there any instructions how to define 202 and 204 responses in my custom connector?

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CU28111156-0 32 on at

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Re: Bug report: 202 and 204 response result in error the data returned in the response is invalid

we have webAPI with openAPI sitting in the backend, in there teh swagger will read annotations on the controller combined with the function. Connector will read this information when you will create it from OpenAPI file or OpenAPI Url. OpenAPI is generated by Swagger/Swaschbuckle.

Tomas

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gilad 6 on at

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Re: Bug report: 202 and 204 response result in error the data returned in the response is invalid

You can solve the problem by adding header to the request in the connector:
prefer:return=representation

you will get respond 201. It solved the problem for me.

For additional information see: https://docs.microsoft.com/en-us/powerapps/developer/common-data-service/webapi/compose-http-requests-handle-errors

Gilad

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CU28111156-0 32 on at

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Re: Bug report: 202 and 204 response result in error the data returned in the response is invalid

Thank you, I will try that.

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echapa 2 on at

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Re: Bug report: 202 and 204 response result in error the data returned in the response is invalid

~~You're amazing, this worked!~~ I guess I spoke too soon. I'm still getting a 204 response with graph even after using the Prefer: return=representation Header.

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