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SharePoint Lists with multiple content types - missing required property

I have 2 content types in the same list:
Content Type A:
* Field A (required)
* Field B
Content Type B:
* Field A (NOT required - in fact should always be empty as it's not relevant for this content type. I tried both not adding this field and making it hidden / optional)
* Field C
When I try to send out a Teams message referencing Field A when creating a new Content Type B:
ResponseSwaggerSchemaValidationFailure. The API 'sharepointonline' returned an invalid response for workflow operation 'When_an_item_is_created' of type 'OpenApiConnection'. Error details: 'The API operation 'GetOnNewItems' is missing required property 'body/value/0/Field_x0020_A'.'
How can I tell Flow that it's OK to ignore Field A? Explicitly branching doesn't work either.

Frequent Visitor


I had a similar problem and resolved it by removing direct 'dynamic content' references to the sometimes-missing column. I replaced them with a Concat expression taking the column name and '' as follows:

  • concat(triggerOutputs()?['body/column_name'],'')


I hope this helps.

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