The network at the construction site is unstable. The person filling in the form may record the progress and problems while offline and submit again after the connection is restored. If the page only shows that the save was successful but does not indicate the save location, personnel may mistakenly believe that the server has received it. Mobile portals need to clarify the difference between local drafts and official records.

How to arrange records and operations

Offline drafts save task identification, occurrence time and attachment status, and synchronize them one by one after being connected to the Internet. Duplicate submissions use a stable flag to prevent two records from being generated. Prompt conflicts when server rules change, allowing personnel to review and submit instead of silently discarding content or overwriting valid records.

The mobile terminal should display the number of drafts, attachments to be uploaded and server confirmation status. Personnel can check which content has not been synchronized before leaving the site. If the local save fails, a clear prompt should be made, and the reserved content of the page should not be treated as a persistent save. Attachment uploading and form submission are checked separately. Images may still be uploaded after the text is successful. Conflict resolution keeps the original draft, and the person chooses to merge or refill it before closing the to-do list. When the public device logs out of the account, indicate which drafts need to be processed first to prevent the next user from seeing data that does not belong to them.

Specific scenarios that require verification

For example, if the same task has been confirmed by another person, the offline draft should be verified after synchronization. Test attachment upload failed, the device logged out of the account, and the draft retried. Local caches involving sensitive information are saved to the necessary extent and cleanup methods are provided to prevent project data from being left on public equipment for a long time.