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"System.Data.constraintException: Failed to enable constraints. One or more rows contain values non-null, unique, or foreign-key constraints"
The exception is displayed when the requirements list is opened, it appear only in one Spira project created some days ago, and contains aobut 15 requirments
we use Spira 3.0 patch 12
this solve the problem, we didn't know that the customer property names have to be unique (cross artifact)