While modeling, you are supported by the Validation panel. The Designer constantly validates the BPMN process and the implemented execution. The validation results are displayed in the Validation panel. The icon in the panel header indicates if there are any validation issues: The items in the validation panel are links. Click an error to select the related BPMN element and display the corresponding execution. Have a look at the objects that are mentioned in the validation messages. Check if everything is connected correctly and if you used the correct types. You cannot deploy and start a process service that still has validation errors. You need to resolve them first. Nevertheless, your order validation process may still show some information messages in the validation panel. The xUML Compiler may indicate that some variables are not used or that some executions are empty. Refer to Validating and Testing a Service in the Designer guide for more information on how to resolve errors. If no errors are shown in the validation panel, you are ready to retest your process. 
Everything is fine. The service is ready to be deployed. 
There are validation issues. You need to resolve these issues before being able to deploy the service. 
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