This article will show you how set a field in Salesforce with a value from your Source Platfom. In this example, we will set the custom field field Gateway ID (Gateway_ID__c) on the Opportunity record to the value provided by the Payment Gateway.

To create your Flow, go to Setup → Process Automation → Flows and click New Flow. Select Autolaunched Flow (No Trigger) from the available options and click Create.

Open Toolbox and click New Resource. Create a new resource with the following information:

In your Flow click the + icon to add a new Element and select Assignment. Configure your assignment with the following information:

You now need to identify the value to use to set on the Gateway_ID__c field. To do so, open a notification and click into Execution:

Inside your Execution, scroll down to Donation Parameters and note the available values:

Copy the value ProcessorTransactionId and under Value in Assignment click New Resource. Enter the following information:

Click Done and the variable ProcessorTransactionId will be added as the value of your assignment:

Your Flow should now look like:

You can now save your Flow. Naming conventions are not of importance but for the framework we use please see equivalent section in the article Assign a Default Value. In this scenario we would set:

You will now need to register your Flow in the MoveData Pipeline. For instructions on how to do this please see Assign a Default Value - Register Flow in MoveData Pipeline. In this scenario we would clone PIPELINE_DONATION_DONATION_MAPPING and set the following values:

You can now open a relevant notification and click Reprocess. Observe that the value ch_3Objk6Bnhz9gJviA2SlJUDbq is set in the execution log and resultant record: