Parameter list for System sequence diagram (SSD)/sequence diagram (SD)

[Lin Don]

Hello,

I have a question about parameters, part of an input message for SSD/SD. I have seen examples showing several parameters (e.g., name, phone); however, there are situations where there could be more parameters used for a message. For example, searchProduct() could have multiple parameters including keyword, manufacturer, brand, price, etc. Not all of them are mandatory, which means that a combination of any of them could be used to search a product. How to represent this situation in an SSD/SD?

Thanks in advance for your help!

Lin