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Advocate I
Advocate I

Unknown Mashup Exception

Why does my data connection fail randomly for no apparent reason.  About every 5-6 days i get an exception error.  I was doing a demo of powerapp and i get "Failed to load [dbo].[tablename]. An error occurred on server. Server Response. Unknown Mashup Exception. inner exception: Column 'ProviderSpecificDataType' does not belong to table."


What the heck is this all about.  One day data connection good.. next day this...




I'm sure they do... They probably don't have a resolution to the problem so they are being silent. As oppose to saying "We are working on it" . 



Not applicable

Yeah, I think so...


But I've registered a support ticket in the following link:


I did the registration some hour ago and I didn´t received answer so far. Just attempt of being attended.

It's back!! Up and running! Thank you PowerApps team!!! Thanks Rapha222 for your support ticket!!!

Sorry about the outage!  We introduced a bug that caused this.  We have since fixed the issue and believe everything should be find. let know if you still face the issue.


Not applicable

It's fine now! Thanks

Hi - I have just started experiencing the same error


Unknown Mashup Exception. inner exception: Object reference not set to an instance of an object. clientRequestId: b84509a8-0186-42ef-ba3e-46cf6e6784e9


Manually retriggering the flow did make the flow run again.


Insert Row action


  "id": 636408026829324900,
  "Title": "xxxx@xxxxx",
  "IsActive": 1,
  "ticks": 636408026819961300,
  "email": "xxxx@xxxxx",
  "datetime": "2017-09-12T08:44:42.9324926Z",
  "seconds": 0,
  "team": "9135",
  "product": "Onboarding NO",
  "category": "Personale & ressource",
  "activity": "Uddannelse kursus"

Output 502


  "status": 502,
  "message": "Unknown Mashup Exception.\r\n     inner exception: Object reference not set to an instance of an object.\r\nclientRequestId: b84509a8-0186-42ef-ba3e-46cf6e6784e9",
  "source": ""
Not applicable

Hi I'm seeing this same issue as of yesterday. 

Not applicable

I am also recieving the same error (MashupException encountered).  I am trying to process my Azure SSAS tabular model.  Doing this through SSMS 2017, on prem.


This problem appeared last week (Thu/Fri), then went away, now back again!!!!!  This is crazy, we are trying to convince the business to "go digital", with Azure being our supplier of choice!!!!  Not being taken very well with the top managment.


Not applicable



I've Experienced the same some times... 😕

Hi All,


I am using CDS for Prospect to Cash data integration(Dynamics Sales to Dynamics fin Ops) on Power Apps.

The tasks for synchronizing accounts and orders worked till yesterday. However, today I am getting Unknown Mashup Exception (0x80004005).


Can we restart the CDS environment (projects and tasks)? Is there any task manager setting for CDS?


Any inputs on the same will be appreciated.





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