Platform: 

•  Unleashed on Browser 

Steps:

In the change where you have any transactions associated with a supplier or customer Code, the assigned currency cannot be amended to a new or intended currency. 

You will need to create a new supplier with the intended currency. However if you want to use the same customer/supplier code, you must amend the previous code (to create differentiation), obsolete that code.

After you should be able to use the previous or older code on your new supplier or customer code.

Additional Information:

• Change Customer Codes
• Supplier Change Codes