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Hello.
Since few days I have a problem when publishing in Azure Data Factory. The publish goes through successfully, I can see my changes in Live Mode (to existing pipelines or entirely new pipelines), but the next step: 'Genarating ARM templates' fails with following message:
{"stack":"Error: TypeError: Cannot set properties of undefined (setting 'supportLegacyDataTypes')\n at https://adf.azure.com/main.cec64f9999b729ee.js:1:8859622\n at Generator.throw (<anonymous>)\n at e (https://adf.azure.com/main.cec64f9999b729ee.js:1:10706251)\n at i (https://adf.azure.com/main.cec64f9999b729ee.js:1:10706489)\n at T.invoke (https://adf.azure.com/polyfills.d3546da007079197.js:1:144971)\n at Object.onInvoke (https://adf.azure.com/main.cec64f9999b729ee.js:1:10955105)\n at T.invoke (https://adf.azure.com/polyfills.d3546da007079197.js:1:144910)\n at Y.run (https://adf.azure.com/polyfills.d3546da007079197.js:1:140251)\n at https://adf.azure.com/polyfills.d3546da007079197.js:1:155330\n at T.invokeTask (https://adf.azure.com/polyfills.d3546da007079197.js:1:145591)\n at Object.onInvokeTask (https://adf.azure.com/main.cec64f9999b729ee.js:1:10954910)\n at T.invokeTask (https://adf.azure.com/polyfills.d3546da007079197.js:1:145512)\n at Y.runTask (https://adf.azure.com/polyfills.d3546da007079197.js:1:140889)\n at ee (https://adf.azure.com/polyfills.d3546da007079197.js:1:147650)\n at invokeTask (https://adf.azure.com/polyfills.d3546da007079197.js:1:146680)\n at invoke (https://adf.azure.com/polyfills.d3546da007079197.js:1:146551)\n at v.args.<computed> (https://adf.azure.com/polyfills.d3546da007079197.js:1:166880)","message":"TypeError: Cannot set properties of undefined (setting 'supportLegacyDataTypes')"}
As during next publish it makes comparison vs arm templates, I can publish the same resources again, as it does not have the latest version in adf_publish branch to compare to.
As mentioned, all changes are published successfully, I can run the newest version of pipelines, but I would like to fix this error as well.
Thanks for assistance
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(12.8, 48%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EH%3C/text%3E%3C/svg%3E)
Hi@Ignacy Jakowiecki
Welcome to Microsoft Q&A platform and thanks for posting your question here.
Based on the error message you provided, it seems that there is an issue with generating ARM templates in Azure Data Factory. The error message indicates that there is a TypeError: Cannot set properties of undefined (setting 'supportLegacyDataTypes'). This error message suggests that there is an issue with the supportLegacyDataTypes property, which is undefined.
This issue can occur due to various reasons, such as outdated browser cache, network connectivity issues, or issues with your Azure subscription or resources. Here are some steps you can try to resolve this issue:
Additionally, you mentioned that you can publish the same resources again, as it does not have the latest version in adf_publish branch to compare to. You can try publishing the resources again and see if the issue persists.
I hope this information helps you. Let me know if you have any further questions or concerns.
Hi,
I have tried multiple publishes, it does not help, the error is the same every time, so yes, issue still persists.
Azure Data Factory is a service that cannot be updated by user. There are no issues with my subscription, nor resources, nor network connection, so neither of steps provided resolve the issue.
Hi Ignacy Jakowiecki
Can you please try checking Azure Data Factory service health status to see if there are any known issues or outages that may be affecting the service. You can do this by navigating to the Azure portal, selecting your Data Factory instance, and then selecting "Service Health" from the left-hand menu.
Hi, the exact same issue applies to me as well. There is no issue with the subscription, nor the ressource or the network. ADF status is healthy. Are there any updates on this?
Hi Fabian Hagemann
We are reaching out to the internal team to get more information related to your query and will get back to you as soon as we have an update.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(252.8, 87%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMK%3C/text%3E%3C/svg%3E)
Hey guys - any updates on this?
We're facing the same issue since 21.12.
Hi Michał Kowalski
We are reaching out to the internal team to get more information related to your query and will get back to you as soon as we have an update.
Hey guys - any updates on this?
We're facing the same issue since 19.12.
Hi there!
I've been facing the same issue since 19.12.
Was someone able to solve this?
Hi everyone. We may have found a clue/solution.
Check all the linked services and see if there us one that is no longer supported.
It worked for us.
That was the cause of our error. Hope this helps!
It worked for us - thanks a lot for sharing this!!!
Thanks for sharing, worked for us as well!
Hi @William Soliman Soares
Glad to know that your issue has been resolved.
Thanks a lot @William Soliman Soares Your solution worked for me as well. It also seems that it helped the internal team in tracking down the issue, so kudos to you!
Internal team, deployed fix for this issue. Kindly consider refreshing browser and retry, it should solve the issue.
Hope this helps.
---Please consider hitting Accept Answer button. Accepted answers help community as well. Thank you.