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Use the Warehouse field to specify where the item items (that will be used as a fixed asset) is are located.
In the Entity field, select an entity of your company for which this document is being prepared. The Entity field is available if the Multi-Company Accounting option is selected on: Administration > Settings> General Settings. You can select your personal default entity to appear in documents; for this, refer to Personal Settings. If you have not selected your default entity, the entity, which was defined first, will be used as the system default value.
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