Find a SKU position name for a given SKUP position name

Hi experts,

RPASCE Server 25.2.401.0.15.3729
In our configuration, we have a measure to take like item information. The value of like_item_skup will be skup position ID for another skup.
Measure name: like_item_skup
Base intersection: skup
Type: string

For some reason, we need to spread the measure like_item_skup to lower sku level, but we also expect that the value of "skup position ID" can be changed to "sku position ID". When there are multiple sku under one skup, any sku position ID will do.

Expected result
<source> skup_id : liked_skup_id
<target> sku_id : one_sku_id_under_the_liked_skup_id