Updating a row with METADATA FIELD in Rest API

[Jason_David]

Hi there, 

I need to update a documnet library row with a metadata column.. I have done with this REST. but i am getting an error : 

A node of the 'Primitive Value' was read from JSON reader when trying to start to read the start of an entry A startobject node was expected.. any ideas ? 

[v-alzhan-msft]

Hi @Jason_David ,

Could you please share a screenshot of the error message when the flow has run failed?

Does the "TermGuid" column is the metadata column that you mentioned?

Could you please take a try to add a "" to the "Document Location TermGuid" dynamic content?

Best regards,

Alice       

Community Support Team _ Alice Zhang
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Jason_David · Accepted solution]

After a while of banging my head - this now works. here is screen shot. 

Hope this helps someone, you need to find your own SP.Data item at the bottom, by doing a REST call to list with an empty body.