--- title: Create ledger assignment rules description: Automate ledger account assignment for a purchase line by relating ledger accounts to a supplier product, product model, product category, spend category, and cost center. locale: en-US canonical_url: https://www.servicenow.com/docs/r/australia/source-to-pay-operations/sourcing-and-procurement-operations/create-ledger-assignment-rules.html release: australia product: Sourcing and Procurement Operations classification: sourcing-and-procurement-operations topic_type: task last_updated: "2026-03-12" reading_time_minutes: 1 breadcrumb: [Ledger assignment rules, Set up master data, Configure, Sourcing and Procurement Operations, Finance and Supply Chain] --- # Create ledger assignment rules Automate ledger account assignment for a purchase line by relating ledger accounts to a supplier product, product model, product category, spend category, and cost center. ## Before you begin Role required: sn\_shop.procurement\_administrator ## Procedure 1. Open the record of a product category, product model, or supplier product to which you want to add the ledger assignment rules. 2. From the Ledger Assignment Rules related list, select **New**. 3. On the form, fill in the fields.
Field Description
Product category Product category that the ledger assignment rules apply to.
Spend category Spend category that the ledger assignment rules apply to.
Product model Product model that the ledger assignment rules apply to.
Supplier product Supplier category that the ledger assignment rules apply to.
   
   
Applies to specific cost center Controls if general ledger accounts are used for one or more specific cost centers.
Cost center Add cost centers.This field is visible only if the **Applies to specific cost center** check box is selected.
Applies to child product categories Controls if general ledger accounts are used for one or more child product categories.
Child product categories Add child product categories.This field is visible only if the **Applies to child product categories** check box is selected.
Applies to child spend categories Controls if general ledger accounts are used for one or more child spend categories.
Child spend categories Add child spend categories.This field is visible only if the **Applies to child spend categories** check box is selected.
Capex account Ledger account to post the capital expenses of this product after the purchase completion.
Expense account Ledger account to post the operational expenses of this product after the purchase completion.
Pre-paid account Ledger account to post the purchase expenses of this product after the purchase completion.
4. Select **Submit**. **Parent Topic:**[Ledger assignment rules](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/source-to-pay-operations/sourcing-and-procurement-operations/ledger-assignment-rules.md)