10000163 
Message
You cannot change the currency for a customer-type business partner linked to a transaction
Diagnosis
In the 
Business Partners 
Business Partner Master Data 
path, you have opened the Business Partner Master Data window, you have added a customer-type business partner.
You have created a sales quotation for the business partner. In the Business Partner Master Data window, you have attempted to update the business partner's currency.
Procedure
Do one of the following:
To close the Business Partner Master Data window without saving your changes, choose No.
To update the business partner's currency, choose Yes.
CautionIf you change the currency for a business partner that is linked to a sales quotation to All Currencies, the change is irreversible.
End of the caution.