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Re: Moodle missing_registration_token error

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by Jake Dallimore.  

Hi,

I think there are a few things which need unpacking here:
  1. LTI 1.3 and LTI Advantage does not use consumer keys. The consumer key is an LTI 1.1 concept (which is based on OAuth1.0), and LTI 1.1 has been deprecated and unsupported for a long while now. Any new tools should be built using LTI 1.3 (OAuth2.0+OIDC). I'm not familiar with that particular library, so I don't know what LTI version it supports.
  2. "When I register the tool manually, I have no way to set the Consumer Key in Moodle."
    Assuming you're creating a 1.1 tool in Moodle, there is a consumer key field on the tool details form (as is there a shared secret field). If you're trying to register the tool using LTI 1.3 and it's a 1.1 tool, this isn't going to work. You need to stick to the version that the tool is using.
  3. "I thought that maybe using the Add LTI Advantage button instead would solve this issue."
    The Add LTI Advantage button is only used when you're creating an LTI 1.3 tool registration using Dynamic Registration (and optional LTI 1.3 specification). If your tool is a 1.1 tool, then you'll need to configure it manually. 
Hope that helps,
Jake

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