[ATP Check] How to ATP Check using External System in Provider Order?

Hi Expert,

Information:

• We use SAP CRM 7.02.
• We use Provider Order.
• We use external system for Availability Check.

Scenario: When create provider order, i will click button ATP Check, then trigger action to send data to external system. Response from external system will displayed in column ATP Status per line item.

Any body have advice how to do this requirement?

Thank you