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Clearing out a multi-select option field in Dynamics 365 from Flow

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Posted on by ishraqiyun77

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I have a multi-select option field in Dynamics 365 that needs to be cleared out after a Flow runs. It is really just a temporary field to create other related records.

I've tried adding the null function to the field on the entity:

This just makes the Flow fail with "Bad Request" and talks about how that doesn't match any of the option set values.

I've tried adding the false function to the field on the entity:

This just makes the Flow fail with "Bad Gateway".

Any other suggestions?

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MichaelFP 1,833 Super User 2025 Season 1 on at

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Re: Clearing out a multi-select option field in Dynamics 365 from Flow

I have the same problem. The field doesn't accept null values.
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v-alzhan-msft on at

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Re: Clearing out a multi-select option field in Dynamics 365 from Flow

Hi @ishraqiyun77 ,

I have made a test on my side and you could refer to workaround below to create the flow:

Note: Create an item with null value in the Multiple column, and then update the item (that you want to update) with the null value Multiple column dynamic content, an you could delete the item later.

Best regards,

Alice

Community Support Team _ Alice Zhang
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