Missing columns from SQL server view

Hi community,  I'm new to MSPBI so would you be able to help me out please.    I've made a connection to one of our SQL Servers and pull in the defintion from a view.  But only a subset of the columns are showing; i.e. the view def. has 10 columns but PBI is only showing 3 of them.   Any ideas what I'm missing?

thanks

Mark