Validation Field&Web Service.
I added new text field in the Activity "Record Type", and I try to add the field validation in the new text field for check the value in the filed is exist in the CustomObject15.
I try to use JoinFiledValue Function in the field validation but the JoinFiledValue is not working with CustomObject15 because JoinFiledValue does not support the CustomObject15.
Kindly, Is there other solution ? Or I need to use a web service for prepare the validation ? if I need a web service, Kindly can you help me about the steps, tools and technologies to call the web service by use java.