post deprecatedhttps://api.nbx-stage-westeurope.nitrobox.io/v2/contracts//billableitems
| ⚠ This operation has been deprecated and will be removed in the future! ⚠ Reason: Purchase items have been replaced by new line items. This operation is replaced by https://docs.nitrobox.io/v2-preview/reference/addlineitem_1. |
| Deprecated since: 2024-07-29 Sunset at the latest: 2025-07-28 |
| Please refer to our "API Lifecycle Management" and our "API Migration Guide" to find out more. |