SAP Message V2091 - Currency &1 is not permitted

Diagnosis You have tried to change the document currency of a partially billedsales document into an unpermitted currency. Procedure You can only change the document currency in partially billed salesdocuments into EUROs. You must maintain this currency code in theEWUKEYS table. Enter the valid currency code for the EURO:

1114424	Local currency changeover: Currency conversion of sales docs