SAP Knowledge Base Article - Preview

2719624 - Custom headers are not sent through on-premise HTTP destination

Symptom

While trying to call API of external service, the header into the request executed by AJAX is truncated and the request shows "not authorized".

Backend ICM trace shows the following response:

[...]
0XXXXX | 3XXXXXXX 0XXXXXXX 7XXXXXXX 6XXXXXXX 7XXXXXXX 7XXXXXXX 6XXXXXXX 3XXXXXXX |.  <h2>401 - Unauthorized: Acces|
0XXXXX | 3XXXXXXX 0XXXXXXX 7XXXXXXX 6XXXXXXX 7XXXXXXX 7XXXXXXX 6XXXXXXX 3XXXXXXX |s is denied due to invalid crede|
0XXXXX | 3XXXXXXX 0XXXXXXX 7XXXXXXX 6XXXXXXX 7XXXXXXX 7XXXXXXX 6XXXXXXX 3XXXXXXX |ntials.</h2>..  <h3>You do not h|
0XXXXX | 3XXXXXXX 0XXXXXXX 7XXXXXXX 6XXXXXXX 7XXXXXXX 7XXXXXXX 6XXXXXXX 3XXXXXXX |ave permission to view this dire|
0XXXXX | 3XXXXXXX 0XXXXXXX 7XXXXXXX 6XXXXXXX 7XXXXXXX 7XXXXXXX 6XXXXXXX 3XXXXXXX |ctory or page using the credenti|
0XXXXX | 3XXXXXXX 0XXXXXXX 7XXXXXXX 6XXXXXXX 7XXXXXXX 7XXXXXXX 6XXXXXXX 3XXXXXXX |als that you supplied.</h3>.. </|
0XXXXX | 3XXXXXXX 0XXXXXXX 7XXXXXXX 6XXXXXXX 7XXXXXXX 7XXXXXXX 6XXXXXXX 3XXXXXXX |fieldset></div>..</div>..</body>|
0XXXXX | 3XXXXXXX 0XXXXXXX 7XXXXXXX                                                |..</html>..                     |
[...]


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Environment

SAP Cloud Platform with AJAX requests

Product

SAP Business Technology Platform all versions ; SAP Connectivity service 2.0

Keywords

header allowlist, custom header, custom headers, 401 - Unauthorized, 401 Unauthorized, AJAX, header, headers, allowlist headers, allowlist header , KBA , whitelisting , whitelist , whitelist headers , whitelist header , header whitelist , BC-NEO-RT-HTML5 , Runtime HTML5 Applications , BC-NEO-CON , Neo to On-premise Connectivity service , Problem

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