Note 21. Inventories
| Type of inventory | ||
| Consolidated | ||
| SEK millions | 2023 | 2022 |
| Raw materials and consumables | 4,862 | 4,833 |
| Work in progress | 3,871 | 3,679 |
| Finished goods & goods for resale, new sales | 3,560 | 3,577 |
| Finished goods & goods for resale, spare parts | 1,975 | 2,112 |
| Advance payments to suppliers | 682 | 574 |
| Total | 14,950 | 14,775 |
A considerable part of the inventory for spare parts is carried at net realisable value.
Obsolescence related to inventories amounts to and has changed as follows:
| Obsolescence | ||||||
| Consolidated |
|
| ||||
| SEK millions | January 1 | Translation difference | Acquired | Write down | Reversal of previous write down | December 31 |
| År: | ||||||
| 2022 | 1,330 | 101 | 27 | 664 | -413 | 1,709 |
| 2023 | 1,709 | -51 | – | 312 | -209 | 1,761 |
The Group’s inventories have been accounted for after deduction for inter-company gains in inventory due to internal sales within the Group. The inter-company profit reserve at the end of 2023 amounts to SEK 731 (761) million.