Profile, messages, bookmarks and preferences Multi Currency Journal Entry against Employee - Foreign currency rejected

I also have a similar issue which is,
I have to update the receivable opening balances of our customers with the journal entry
Our company currency is USD
we are doing multiple entries
I want to add bank opening balances, we have two banks one is USD and one AED .so when I try to enter entries of debtors it will be automatically going to AED I want to make this as USD how can I fix this can you help me
When creating a customer I have given currency as USD but it is showing in the journal as AED.