Structure Management ─ Deployment and Administration
Set the default quantity to 1 when the unit of measure is each
Learn how to automatically set the default quantity to 1 for new structure elements when their unit of measure is each. You can also understand how to set the quantity to existing elements. You can set the default quantity to 1 when the unit of measure for a structure element is each. In this case, when a business user adds a new element to a structure, the quantity is automatically set as 1 by default. Accordingly, when the unit of measure is not each by default, the quantity is not set as 1. You can configure this using the BOM_occ_default_qty_prevent_from_blank preference. By default, the value for this preference is false. When you set the value to true, the default quantity for a newly added element is set to 1 when the unit of measure is each. However, when you set the value to false, the default quantity for a newly added element is not set to 1 even when the unit of measure is each. After you update the preference value, the user does not see the quantity updated for the existing elements. The user can see the quantity set as 1 only for the newly added elements. To copy the value (of 1), the user must drag the quantity to the other elements in the structure.
Source: https://docs.sw.siemens.com/documentation/external/PL20251212545240207/en-US/tc_help/administering_product_structures/wuh1737238822519/xid2273753.html · retrieved 2026-07-11