Correct BPMN is not so easy to create. With Process Modeler it’s child’s play!
Process Modeler includes a powerful validation module, which can run automatically or manually to check the syntax of the currently displayed BPMN diagrams.
Any syntax errors in the modeling will be marked with an icon and appear in the to-do list. This list contains details of the error and their solutions. The degree of error (Error, Warning, Info and Hidden) can be easily modified and remapped.
There are also other syntax validation sets such as XPDL, simulation, BPEL and XLANG / s validation , which can be turned on or off, according to your needs.