What is Zap Dishonour fee?

Could you please clarify what exactly is meant by the term "Zap Dishonour fee"? Is this a specific fee associated with a cryptocurrency transaction or platform? If so, how does it differ from other types of fees typically encountered in the crypto space? And what circumstances might lead to this fee being imposed? Additionally, are there any best practices or steps one can take to avoid incurring such a fee? Thank you for your time and attention to this inquiry.