Symptoms

On an attempt to transfer an existing Adobe subscription and after clicking on the button 'VALIDATE VIPS', the following error message appears:

"There have been problems contacting with the Adobe API. Contact with your administrator"

In Adobe APS endpoint-tailed logs, the same issue appears: 

[2023/05/04 08:01:57] INFO start the get method for /v2/memberships/XXXX/offers
[2023/05/04 08:01:57] INFO Trying to get property of non-object at /var/www/html/AdobeAPS/lib/Adobe/AdobeAPI.php:122
[2023/05/04 08:01:57] INFO There have been problems contacting with the Adobe API. Contact with your administrator. 

Cause

The error that appears in the logs is related to the problem with the credentials configured in the reseller profile. The system is not capable of getting the token from Adobe to make the query for the transfers. 

Resolution

Make sure the credentials are correct.