Pinterest messages cannot include links
Pinterest blocks notes containing URLs. After adding the URL to a post, remove it from the text input. After removing, the message will still display the link preview and will publish as a Pin with a link-preview image attached.

Why did I receive this error?
Pinterest does not allow links inside of the text input of a Pin scheduled in Pinterest or inside of CoSchedule.What should I do to resolve this?
You will need to remove the link or {permalink} social helper from the text of your message.How do I prevent this error from happening in the future?
To avoid this error, you'll want to remove the {permalink} social helper from any Social Templates or social messages that you have that are publishing to Pinterest.