We have implemented a batch Apex solution for mass update records. More specifically, we upload a CSV file (more or less 2500 records) in a custom object and we "read" this CSV to create some child records of this object. After this step, a SOAP callout is performed for every record. There are some cases in this callout that randomly in some records the request is like it "gets cut" or it becomes invalid. We do not have UTF Encoding. For example, i get an error
- System.CalloutException The following exception has occured: IO Exception: Unableto tunnel through proxy. Proxy returns "HTTP/1.1.503 Service Unavailable" What could be the issue?