The issue is reproducible also when generating the stock moves associated to he ambulatory care.

Since Tryton LTS 6.0, the product cost_price is required in certain stock moves.

The issue was introduced by Tryton here:

https://hg.tryton.org/modules/stock/rev/694a0303831f
 
It's related to the storage location type. It applies in these
scenarios:

 from_type != 'storage' and to_type == 'storage'
 from_type == 'storage' and to_type != 'storage'
 from_type != 'drop' and to_type == 'drop'
 from_type == 'drop' and to_type != 'drop'

Under these scenarios, we need to add the cost price as an argument. Because the cost_price is required in the product, I propose to always pass it as an argument, regardless whether it will be used or not when creating the stock move.

health-dev thread with Francisco about this: https://lists.gnu.org/archive/html/health-dev/2023-09/msg00026.html