var existingRecord = await this.GetGoodsDelivery(goodsDelivery.Id);

            var detailIdsInNewRecord = new HashSet<int>(goodsDelivery.GoodsDeliveryDetail.Select(d => d.Id));

            foreach(var record in existingRecord.GoodsDeliveryDetail.ToList())
            {
                if(!detailIdsInNewRecord.Contains(record.Id))
                {
                    inventoryContext.GoodsDeliveryDetail.Remove(record);
                 
                }
            }

            foreach(var newrecord in goodsDelivery.GoodsDeliveryDetail.ToList())
            {
                if(newrecord.Id == 0)
                {
                    var newDetailRow = new GoodsDeliveryDetail();
                    var newrecordType = newrecord.GetType();
                    var properties = newrecordType.GetProperties();
                    foreach (var property in properties)
                    {
                        var value = property.GetValue(newrecord);
                        property.SetValue(newDetailRow, value);
                    }


                    goodsDelivery.GoodsDeliveryDetail.Add(newDetailRow);
                }
            }
            
            inventoryContext.GoodsDelivery.Update(goodsDelivery);       
            await inventoryContext.SaveChangesAsync();

error occurs

System.InvalidOperationException: ‘The instance of entity type ‘GoodsDelivery’ cannot be tracked because another instance with the same key value for {‘Id’} is already being tracked. When attaching existing entities, ensure that only one entity instance with a given key value is attached. Consider using ‘DbContextOptionsBuilder.EnableSensitiveDataLogging’ to see the conflicting key values.’

var existingRecord = await this.GetGoodsDelivery(goodsDelivery.Id);

            var detailIdsInNewRecord = new HashSet<int>(goodsDelivery.GoodsDeliveryDetail.Select(d => d.Id));

            foreach(var record in existingRecord.GoodsDeliveryDetail.ToList())
            {
                if(!detailIdsInNewRecord.Contains(record.Id))
                {
                    inventoryContext.GoodsDeliveryDetail.Remove(record);
                 
                }
            }

            foreach(var newrecord in goodsDelivery.GoodsDeliveryDetail.ToList())
            {
                if(newrecord.Id == 0)
                {
                    var newDetailRow = new GoodsDeliveryDetail();
                    var newrecordType = newrecord.GetType();
                    var properties = newrecordType.GetProperties();
                    foreach (var property in properties)
                    {
                        var value = property.GetValue(newrecord);
                        property.SetValue(newDetailRow, value);
                    }


                    goodsDelivery.GoodsDeliveryDetail.Add(newDetailRow);
                }
            }
            
            inventoryContext.GoodsDelivery.Update(goodsDelivery);       
            await inventoryContext.SaveChangesAsync();