// Domain/Entities/MmMaterialSpecification.cs using System; using Volo.Abp.Domain.Entities.Auditing; using Volo.Abp.MultiTenancy; namespace Erp.Platform.Entities; public class MaterialSpecification : FullAuditedEntity, IMultiTenant { public Guid? TenantId { get; set; } public Guid MaterialId { get; set; } public Material Material { get; set; } public string SpecificationName { get; set; } public string SpecificationValue { get; set; } public Guid UnitId { get; set; } public Uom Unit { get; set; } public bool IsRequired { get; set; } }