'Dépassement de crédit' is a common term for 'bank overdraft' so I speculate this would be exceeding a line of credit'

Can you tell if this is a brokerage account? Brokerages often offer a line of credit or 'margin trading' credit based on the value of assets in the account (usually stocks, bonds & cash). That would seem to make sense. They mean the account holder has exceeded the amount of credit his assets would justify. Or it could be another kind of asset based line of credit.

Dépassement de crédit definitely means bank overdraft, I reconfirmed it in my accounting/finance dictionary, but without more context I can't be certain of the above theory.

I'll try to research further.

I