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# Configure custom fields

> Learn how to configure custom fields for prepaid and drawdown charges in Zuora.

Learn how to configure custom fields for prepaid and drawdown charges in Zuora.

Custom fields will be used in the configuration of prepaid and drawdown charges.

In your Zuora tenant, navigate to **Settings** > **Billing** > **Manage Custom Fields**.

Add custom fields for Prepaid Drawdown. See [Manage Custom Fields](/docs/platform/extensibility/custom-fields/custom-field-overview) for information on how to create custom fields. Note that when creating a new custom field for Prepaid Drawdown, do not select the **Required** and **UI Read Only** checkboxes.

1. Navigate to **Account Fields** > **Account Custom Fields and Relationships (Non-Indexed)** > **add new field**.
2. Add the following custom field:

   | Field Type | Field Label  | Length |
   | ---------- | ------------ | ------ |
   | Text       | PPDD Balance | 255    |
3. Navigate to **Subscription Fields** > **Subscription Custom Fields and Relationships (Non-Indexed)** > **add new field**.
4. Add the following custom field:

   | Field Type | Field Label  | Length |
   | ---------- | ------------ | ------ |
   | Text       | PPDD Balance | 255    |
5. Navigate to **Product Rate Plan Charge Fields** > **Product Rate Plan Charge Custom Fields and Relationships (Non-Indexed)** > **add new field**.
6. Add the following custom Product Rate Plan Charge fields:

   <table>
     <tr>
       <th>
         Field Type
       </th>

       <th>
         Field Label
       </th>

       <th>
         Picklist Values
       </th>
     </tr>

     <tr>
       <td>
         Picklist
       </td>

       <td>
         PPDD Use Prepayment On Taxes
       </td>

       <td>
         Yes

         No
       </td>
     </tr>

     <tr>
       <td>
         Picklist
       </td>

       <td>
         PPDD Use Prepayment On Discounts
       </td>

       <td>
         Yes

         No
       </td>
     </tr>

     <tr>
       <td>
         Picklist
       </td>

       <td>
         PPDD Ignore Discount For Balance Calculations
       </td>

       <td>
         No

         Yes
       </td>
     </tr>

     <tr>
       <td>
         Picklist
       </td>

       <td>
         PPDD Allow Negative Prepaid Balance
       </td>

       <td>
         Yes

         No
       </td>
     </tr>

     <tr>
       <td>
         Picklist
       </td>

       <td>
         PPDD Balance Location
       </td>

       <td>
         Account Subscription
       </td>
     </tr>

     <tr>
       <td>
         Picklist
       </td>

       <td>
         PPDD Type
       </td>

       <td>
         Prepayment Drawdown
       </td>
     </tr>

     <tr>
       <td>
         Picklist
       </td>

       <td>
         PPDD Ignore Negative Invoice Items
       </td>

       <td>
         No

         Yes
       </td>
     </tr>

     <tr>
       <td>
         Text
       </td>

       <td>
         PPDD Reason Code
       </td>

       <td>
         255
       </td>
     </tr>

     <tr>
       <td>
         Text
       </td>

       <td>
         (Optional) PPDD Deferred Accounting Code Override
       </td>

       <td>
         255
       </td>
     </tr>

     <tr>
       <td>
         Text
       </td>

       <td>
         (Optional) PPDD Recognized Account Code Override
       </td>

       <td>
         255
       </td>
     </tr>
   </table>