Pagination error invalid token for Rest API Data Factory - azure

Question

I am trying to use rest api to do pagination as it is just sending the first page in Azure ADF going to blob storage. I am currently using AbsoluteUrl and $['#odata.nextLink'] to get over all the pages, the issue is I am getting this error, I have used first used the token activity to get the token and then used it in copy activity where the source is rest api dataset with headers dynamically coming from token activity and then used pagination. Can you point me in the right direction on if this is the correct approach or am I missing something.
This is how the import schema looks like:
And the error after importing schema
This is how my rest api configuration look like:
And this is how my token all web activity looks like:
Edit 2:
This is how the output is for Web activity:
Including the part of the snip that missed the access token:
This is the output for Copy Activity when Pagination is on:
This is the setup of the pipeline:

Answer 1

HttpStatusCode 401 indicates the authentication was not completed or failed due to invalid credentials. It maybe that the access token is missing in request from copy activity or not referenced properly or is expired. Make sure you already have the right access to this API.
Here is an example with basic configuration requirements:
Get the access token
Ensure you are able to reference it dynamically using Add dynamic content fields. Modify the reference with respect to the output you have received from earlier Login Activity.
Additional headers: Authorization: #concat('Bearer', activity('Login').output.access_token)
AbsoluteUrl: ${result_root}.{nextPageURL}
Here is the official doc on Pagination support refer the supported Key and value pairs.
If you are getting the access token correctly but still seeing the error, try to Import Schema in Mapping Settings of copy activity. And make sure the nextPageUrl or odata.nextLink in your case is mapped correctly.
Recheck $['#odata.nextLink'] , AbsoluteUrl value as:
$.rootElementName.CollectionOfItems.nextLinkURL