Hi,
Are you using the old VNI authentication method? If so, this could be causing the problem. Step 1 is then to migrate to Connect Authentication.
You will find information about this here: https://community.visma.com/t5/News-in-Developers-Visma-net/Urgent-Visma-net-update-regarding-Connect-Authentication/ba-p/661697
Best regards
Oskar Jansson
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