Entity Framework Error: Unable to track an entity of type OrderItem because primary key property ProductVariant is null

Last Reply one month ago By jon

Posted one month ago

hi

in my OrderItems table i need a composite key as

Id, ProductCode,ProductVariant

I tested insert in sqlite with null ProductVariant but from webapi post

i recive error

InvalidOperationException: Unable to track an entity of type 'OrderItem' because primary key property 'ProductVariant' is null.

Microsoft.EntityFrameworkCore.ChangeTracking.Internal.NullableKeyIdentityMap<TKey>.Add(InternalEntityEntry entry)

 

How can solve?

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