Content Studio: Error while uploading HTML-Mail

Hello Community,

We created a new mail for the SAP Marketing system and want and want to upload it. Every time we tried this, the error message occurs that the “Email contains script functions.” but it does not contain any script code. So I tried to upload a template that I already successfully uploaded a few months ago. Nevertheless, there the same error appeared. Finally, I tried uploading the files to another SAP Marketing system and it worked fine.

Does anybody has any idea what could cause this issue?

Kind regards,

Robert