No permission to access a SharePoint list that contains data required for this form to work properly

Good morning...

I did a workflow(State Machine - with Infopath forms), at the third task I have a infopath form which have to read a list items; well everything is fine, I publish good...but I have a trouble when I run the Workflow in SharePoint I have the next problem: 

Failed to query a data source

No permission to access a SharePoint list that contains data required for this form to work properly

I have a InfoPath form as Truth and Sure level security; what should I do...

Thanks

Answer for Olver Parra Peña