# Simulator

Simulators enable you to trigger processes in Sandbox that in Production are triggered from an external action rather than from your application. this way you can test scenarios that otherwise you would only encounter in the Live environment.
*Note: These endpoints are only available on Sandbox and won’t work in the Live environment.*

 - [POST /simulate/v1/payment_runs/{payment_run_id}/fund_group/{reference}](https://api.weavr.io/products/payment-run/openapi/simulator/postfundpaymentrungroup.md): Simulate funding a payment run using a linked account. *This endpoint will only function in Sandbox and should not be used in the Live environment.*
 - [POST /simulate/v1/linked_accounts](https://api.weavr.io/products/payment-run/openapi/simulator/postlinkedaccounts.md): The Linked Account Simulator allows you to create a simulated linked account that can be used for funding payment runs. *This endpoint will only function in Sandbox and should not be used in the Live
 - [POST /simulate/v1/linked_accounts/{linked_account_id}/fund](https://api.weavr.io/products/payment-run/openapi/simulator/postsimulatelinkedaccountfundverification.md): Simulate Control Check via Test Funding Transaction
 - [POST /simulate/v1/buyers/{buyer_id}/verify](https://api.weavr.io/products/payment-run/openapi/simulator/verifybuyerkyb.md): Simulates due diligence (KYB) for Buyers. *This endpoint will only function in Sandbox and should not be used in the Live environment.*
 - [POST /simulate/v1/consents/{linked_account_id}/change_status](https://api.weavr.io/products/payment-run/openapi/simulator/postsimulateconsentstatuschange.md): Simulate AIS consent status change. *This endpoint will only function in Sandbox and should not be used in the Live environment.*
 - [POST /simulate/v1/payment_run_sca/{payment_run_id}/challenges/otp/{channel}](https://api.weavr.io/products/payment-run/openapi/simulator/issuepaymentrunchallengesimulate.md): Simulates issuing the SCA challenge for a payment run. *This endpoint will only function in Sandbox and should not be used in the Live environment.*
 - [POST /simulate/v1/payment_run_sca/{payment_run_id}/challenges/otp/{channel}/verify](https://api.weavr.io/products/payment-run/openapi/simulator/verifypaymentrunchallengesimulate.md): Simulates verifying the SCA challenge for a payment run. *This endpoint will only function in Sandbox and should not be used in the Live environment.*