दूसरे जैन तीर्थंकर, अजीतनाथ का प्रतीक चिन्ह क्या है?

In which year AD was the Jain Council held at Vallabhi under the leadership of Devardhi Kshamasramana to codify Jain canons?

Where did the final council take place for the collection and compilation of the Svetambara Jain Agamas/Prakrit texts?