Japan and South Korea will hold talks in Tokyo on Friday to discuss Japan's tightened curbs on exports of some materials to South Korea.
It will be the first meeting between the countries since Japan implemented the measure last week.
The tougher curbs apply to shipments of 3 materials to South Korea. The items are used for production of semiconductors and other high-tech devices.
Officials say South Korea's own trade controls are lax and that's raised security concerns.
Friday's meeting will take place at South Korea's request.
Seoul is demanding Tokyo withdraw the measure. South Korean officials are expected to ask their Japanese counterparts to give a more thorough explanation for the action they have taken.
The Japanese side will say the measure is a result of a review of trade controls and is not up for discussion.