When running Nintex Workflow for Office 365, the following message appears in the Workflow status history page:
Some parameters failed the validation check. - [InputDestinationSharePointUrl] : Destination URL is invalid

The error is shown when the 'Destination site URL' field has either been entered in manually or copied and pasted from a similar account. To resolve the issue, you will need to do the following:
1. Clear the existing text for the field 'Destination site URL'
2. Place cursor in the 'Destination site URL' field
3. Expand 'Workflow Context' section on the right
4. Click on 'Current site URL' to add this information to the 'Destination site URL' field