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Custom Theme export fails with Failed to authenticate management route - error during JWT token validation: TypeError: Cannot read properties of null

Question & Answer


Question

Custom Theme export fails with :
curl -k -X 'POST' -H "Authorization: bearer ey<hide_me>qg" -H 'Accept: application/yaml' 'https://apim.mgmt.apic.<hide_me>.ibm.com/portal/catalogs/porg1/subin/custom-theme/export'

status: 401
message:
  - Failed to authenticate management route
errors:
  - >-
    error during JWT token validation: TypeError: Cannot read properties of null
    (reading 'header')

Cause

The issue is Header Case Sensitivity. In the failed request, the Authorization header is written as:
'Authorization: bearer <token>'
For a successful call, it should be :
'Authorization: Bearer <token>'
OAuth 2.0 tokens are case-sensitive, and the correct scheme is Bearer with a capital B. Using lowercase bearer can cause the server to reject the token.

Answer

To resolve the issue using Bearer with a capital B. Here is an example:
curl -k -X 'POST' -H "Authorization: Bearer ey<hide_me>qg" -H 'Accept: application/yaml' 'https://apim.mgmt.apic.<hide_me>.ibm.com/portal/catalogs/porg1/subin/custom-theme/export'

status: 201
message:
  stdout: '/catalogs/dc75eb72-4aed-4833-9424-c2311fc4a242/0dd3beac-fa05-47f9-8901-7c65fcbc1b54/custom-theme/export/cjtbklv34j7ngxgz/status'
  stderr: ''
errors: []

[{"Type":"MASTER","Line of Business":{"code":"LOB77","label":"Automation Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSMNED","label":"IBM API Connect"},"ARM Category":[{"code":"a8mKe000000CaZYIA0","label":"API Connect-\u003EAPIC Portal"}],"ARM Case Number":"TS020473000","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"and future releases;10.0.5"}]

Document Information

Modified date:
08 October 2025

UID

ibm17247463

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