To resolve publishing errors that arise when working in Excel, see one of the following articles:
Resolve data conflicts:
A data conflict occurs when one team member changes a field value in Excel at the same time another team member changes the same field in Azure Boards.
Resolve data validation errors:
A data validation error occurs if a team member changes a work item in a way that violates the rules for that type of work item.
Address inaccuracies published for summary values:
If hours are counted twice in reports that contain task hours, you can correct the problem by using the Work Items With Summary Values team query.