# Testing

To verify that your payment flow is working correctly:

* For the creation of payment links: Ensure that a payment link is created on PaySG's dashboard with the correct form details. 
* For the sending of payment/Postman emails: Ensure that an email is successfully received after form submission.

Once verified, you may create a live payment service at [pay.gov.sg](https://pay.gov.sg). You may choose to create a new pipe, or add a new connection for the live payment service instead of the staging payment service.

## Troubleshooting

#### Plumber

* Once you've verified that all the steps were followed accordingly, check if your pipe has been published. If your pipe's status is "Draft", your pipe has not been published yet. Access the selected pipe and click "Publish" in the top right corner.

<figure><img src="/files/kx0ooDMsF0EB5ODkns4j" alt=""><figcaption></figcaption></figure>

* For payment flows with unexpected results, check the "Executions" tab on Plumber for executions with a "Failure" status.

<figure><img src="/files/GSWaU3S32p3LA68LOKP4" alt=""><figcaption></figcaption></figure>

#### PaySG

<figure><img src="/files/tP4RUleGzYHl4VNf13YE" alt=""><figcaption><p>PaySG error</p></figcaption></figure>

Ensure that all [compulsory fields](/start-using-the-dashboard/one-time-payment-links/single-link-creation.md) are filled in. You may do so using a form response or by inputting a fixed value on Plumber.

#### Calculator

<figure><img src="/files/JL6XVwnvpaZbjajUiFgJ" alt=""><figcaption><p>Missing value in "firstNumber"</p></figcaption></figure>

<figure><img src="/files/iWJToO7N1BL9utOqzBqc" alt=""><figcaption><p>Calculator error message</p></figcaption></figure>

Ensure that all fields are filled in.&#x20;

For forms with **optional** payment amount fields, having an empty result will cause the pipe to fail. To prevent this, add a "0" in front of the selected result.

<figure><img src="/files/YKL7043fqcTd1n4FFJDx" alt=""><figcaption></figcaption></figure>


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