Update SharePoint List by calling Rest API

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Occasional Contributor

I have a list I want to update by calling the list API. I am able to get the data of this list by calling the Rest API, however I am not able to update a column data with PUT method. The API keeps giving me this message: 403 Forbidden. Please help. I will really appreciate it. Thanks 

2 Replies
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This could be permission related or it due to the digest number in the API call. Note the double underscore mentioned in the last response to this post.
https://sharepoint.stackexchange.com/questions/214569/getting-403-while-using-sharepoint-rest-api
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Thanks for your help Steve. I really appreciate it. Let me try it out and get back to you.