We are trying to make an apiproxy, where most calls need a header called AccessToken. This header is just supposed to pass through to the backend system, which needs it for authorization, but for some reason apigee changes the value to ***** (5 stars). We tried using another header and copying the value, since it only changes the header called "AccessToken", but it immediately reverts to *****.
Unfortunately we do not have the option of renaming the header in the backend system.
Why is this exact header changed and how do we avoid it.
Note that we are not using any OAuth and the api is protected with another header called apikey.
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