Symptoms

An order fails with the following error:

The last error - "Service Creation Failed: Platform error #error_code #-1, extype_id #-1, module_id #, invalid OAuth signature: SIGNATURE for url https://https://proxy:port/aps/2.2/resources/UID. Service Creation Failed: Platform error #error_code #-1, extype_id #-1, module_id #, invalid OAuth signature: SIGNATURE for url https://https://proxy:port/aps/2.2/resources/UID.". 

Cause

The error was caused by misconfiguration. There was a difference in inbound proxy configuration between the following settings:

System > Settings > Integration > APS Connection: Proxy settings > Inbound proxy

and

Parameter proxy_set_header Host in /etc/nginx/conf.d/aps-proxy.conf on Dropbox proxy server.

Resolution

Match the aps-proxy.conf entry with Provider Control Panel without the header.

Internal content