How to use 'Post' in Gateway client for an empty table

Hi All,

I am facing a question that how to use 'Post' function in gateway client to add a line of data to an empty table? As some material mentioned I should use 'Get' first and then click the 'Use as Request' button to get the format but my entity is using an empty table so I cannot use the 'Get' function to get the format. Could anyone give me some advice about it? Thanks in advance.

Regards,

Zhengzhang