DYNDB001: Missing partition key

Field	Value
Code	DYNDB001
Severity	Error

Message

Entity '{0}' must have exactly one property marked with [PartitionKey]

Description

Every DynamoDB entity must have exactly one partition key property. The source generator requires a partition key to generate proper key handling, query builders, and CRUD operations for the entity.

Example

The following code triggers this diagnostic:

[DynamoDbTable("Orders")]
public partial class Order
{
    [DynamoDbAttribute("orderId")]
    public string OrderId { get; set; } = string.Empty;

    [DynamoDbAttribute("status")]
    public string Status { get; set; } = string.Empty;
}

Fix

The corrected version:

[DynamoDbTable("Orders")]
public partial class Order
{
    [PartitionKey]
    [DynamoDbAttribute("pk")]
    public string Pk { get; set; } = string.Empty;

    [DynamoDbAttribute("orderId")]
    public string OrderId { get; set; } = string.Empty;

    [DynamoDbAttribute("status")]
    public string Status { get; set; } = string.Empty;
}