# Sales Invoice - How to add the Purchase Order of my customer?

**URL:** <https://forum.manager.io/t/sales-invoice-how-to-add-the-purchase-order-of-my-customer/48112>\
**Category:** Uncategorized\
**Created:** [July 24, 2023, 1:35pm UTC](https://forum.manager.io/t/sales-invoice-how-to-add-the-purchase-order-of-my-customer/48112 "2023-07-24T13:35:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mike011](https://avatars.discourse-cdn.com/v4/letter/m/e480ec/32.png) [@Mike011](https://forum.manager.io/u/Mike011)\
**Post date:** [July 24, 2023, 1:35pm UTC](https://forum.manager.io/t/sales-invoice-how-to-add-the-purchase-order-of-my-customer/48112/1 "2023-07-24T13:35:22Z")

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Hi,  
Is there a way to add the customer’s Purchase Order in a Sales Invoice?  
I can’t seem to find a way to add a custom field neither.  
Thanks

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**Author:** ![Joe91](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.manager.io/joe91/32/35781_2.png) [@Joe91](https://forum.manager.io/u/Joe91)\
**Post date:** [July 24, 2023, 2:27pm UTC](https://forum.manager.io/t/sales-invoice-how-to-add-the-purchase-order-of-my-customer/48112/2 "2023-07-24T14:27:45Z")

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[Create sales orders | Manager](https://www.manager.io/guides/7236)  
[Use custom fields | Manager](https://www.manager.io/guides/8941)