Common Issues

No Flex Shipping method returned in checkout

Check method active status, website scope, and active window. Then verify rate ranges and method conditions.

Unexpected rate selected

Review conflict strategy and priority settings for overlapping rates.

Shipping amount differs from expectation

Confirm calculation scope (shipment vs package), package splitting strategy, and attribute mappings for weight/volume.

Hard to explain result to support team

Use simulator output and audit trace together to verify and communicate the exact decision path.