Showing results for 
Search instead for 
Did you mean: 
Level: Powered On

Canvas: 502 OData Azure

I'm developing a custom component for Canvas apps.

The component is based on Grid component 

I've created an app tied to my "Customer" table.

When I try to tie this table to my component, I get the following error:


 Unexpected Exception : System.NotImplementedException: Unsupported OData $select Item
↵ at Microsoft.Azure.Connectors.Common.Mashup.Utilities.ODataToSqlSelectItemTranslator.NotYetImplemented(SelectItem item) in X:\bt\1026498\repo\src\source\Mashup\Sql\Native\Utilities\ODataToSqlSelectItemTranslator.cs:line 21
↵ at Microsoft.Azure.Connectors.Common.Mashup.Utilities.ODataToSqlSelectItemTranslator.Translate(WildcardSelectItem item) in X:\bt\1026498\repo\src\source\Mashup\Sql\Native\Utilities\ODataToSqlSelectItemTranslator.cs:line 27
↵ at Microsoft.Azure.Connectors.Sql.Extensions.QueryOptionsExtensions.ToSelectString(IEnumerable`1 selectedItems) in X:\bt\1026498\repo\src\source\Mashup\Sql\Native\Extensions\QueryOptionsExtensions.cs:line 128
↵ at Microsoft.Azure.Connectors.Sql.Extensions.QueryOptionsExtensions.ToSqlString(QueryOptions options, String table, Int64 pageSize) in X:\bt\1026498\repo\src\source\Mashup\Sql\Native\Extensions\QueryOptionsExtensions.cs:line 66
↵ at Microsoft.Azure.Connectors.Mashup.Sql.SqlNativeAdapter.<ListItemsAsync>d__23.MoveNext() in X:\bt\1026498\repo\src\source\Mashup\Sql\Native\Adapter\SqlNativeAdapter.cs:line 290
↵ inner exception: Unsupported OData $select Item

Community Support Team
Community Support Team

Re: Canvas: 502 OData Azure

Hi @KoBe321 ,

I think you should check PowerApps component framework's limitations:

1)Only the field type of components are supported in the experimental preview for canvas apps and not the dataset type components.

2)Common Data Service dependent APIs, including WebAPI along with few other APIs, are not available for this experimental preview.

3)Support for shared libraries across components using library nodes in the component manifest is not yet supported. 

4)Defining multiple components in a single manifest file is not yet supported.

5)Calling out processes and actions are not supported yet. 

6)Calling one component from another code component is not yet supported.

7)Currently font resource (.tff) is not yet supported.

Here's a doc about it in details for your reference:

Here's a doc about troubleshooting of custom component that may also help you:



Best regards,

Community Support Team _ Phoebe Liu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Power Apps Staff HemantG
Power Apps Staff

Re: Canvas: 502 OData Azure

Data set work is ready in progress. There was a regression introduced which causes data sets to fail when the app in launched (outside studio preview). web APIs and certain dataset capabilities are under development, if you can share your control code ( , we can quick check if this is pending work or a bug.


Helpful resources


Power Apps Community User Group Member Badge

Fill out a quick form to claim your user group badge now!


Power Platform World Tour

Find out where you can attend!

Power Platform 2019 release wave 2 plan

Power Platform 2019 release wave 2 plan

Features releasing from October 2019 through March 2020


Difinity Conference

The largest Power BI, Power Platform, and Data conference in New Zealand

Top Kudoed Authors (Last 30 Days)
Users online (5,401)