Different fields on different layout in the same record，at the same time editing will cause conflict，how can I solve it?
For the same user, they won't cause conflict unless the user tries to edit the same record in two different windows at the same time. Is that what you are trying to do here and getting an "edit lock" on the record?
There are multiple possible solutions from committing the record in window 1 before attempting to edit it in window 2 to not using two different windows to edit the same records in the first place. Other options are also possible, but notice how much guessing that I'm doing just to understand the question. You can help others to help you if you write up a more detailed description of the issue.
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