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Customer Master (Control Data) 
The part of a customer master record where you record general information about a customer. To access the customer master, on the SAP Easy Access screen, choose Accounting ® Financial Accounting ® Accounts Receivable ® Master Records ® ….
On the Control Data screen, fill out the fields as follows:
· Enter the customer’s RIF number in the Tax Number 1 field.
· If the customer has an NIT number, enter it in the Tax Number 2 field.
The RIF number is shown in the Sales Ledger report.
