SharePoint Lists with multiple content types - missing required property

[tyteen4a03]

Hi,
 
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.

[Mart1]

Hi,

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.