A. Check the input fields for any special characters or symbols that may not be accepted. Remove any such characters and try updating the contact details again. Ensure that only alphanumeric characters, spaces, and standard punctuation are used.

B. If the issue persists, try clearing the app's cache. Go to your device's Settings > Apps > PeopleHR > Storage > Clear Cache. After clearing the cache, restart the app and attempt to update the contact details again.