If a Web service returns an array with a null value, you can declare an Any datatype variable to hold it; however, if you use an array variable to hold the null return value, PowerBuilder reports a runtime error. If the null value is returned for an embedded array, PowerBuilder throws an exception whether you use an Any variable or an array variable to hold the return value. When you use a Web service that returns an array or an embedded array, you should test whether that value is null using the IsNull method before deciding how to proceed. [CR 415207]
If you attempt to debug and run a workspace that imports a structure with an array member that returns a null value, then attempt to assign the null value to another variable, this can cause PowerBuilder to throw an exception. [CR 409850]