I have competed the following fields at https://www.methodintegration.com/MethodAPI/service.asmx?op=MethodAPIGetScreenURLV4 to test viewing an activity screen...
strCompanyAccount
strLogin
strPassword
TabName
TabLinkName
RecordID
Receiving the following error...
"Cannot convert to System.Boolean.
Parameter name: type ---> String was not recognized as a valid Boolean."
Are none of the other fields required?