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If you use check-in unlocking, the object will be set to read-only on the workstation so that it is less likely that a developer can overwrite changes. They must check-out the object again before they can update it. However, if the object lock is released at check-in, it can now be used by a different task. You must be sure that the object is locked again so that it is included with the group of objects as part of the product.