Several SSB indices have almost identical names, and several indices can have the same number. For example, 08655 is used for many trades, both for "total" and for materials. Therefore, check both the number and the full name.
How to do it
Find the index number and index name in the contract, for example 08655 for apartment block total.
Go to Index regulation and click + Index, or Edit on an existing index.
Open the list in the External index field. The number comes before the name, for example "08651: Construction cost index for dwellings, total (SSB)".
Select the index where both the number and the name match the contract, including the trade and whether it applies to "total" or only materials.
Good to know
The wrong index gives the wrong index regulation, both in the billing schedule and in the forecast going forward.
If the contract does not state an index number, clarify it with the counterparty before you set up index regulation.
If you cannot find the index with the right number in AIMZ, you can ask support to fetch it.

