In the Web Services configuration module there is no possibility to configure request body.

Said possibility is already present in the Webhooks configuration module and in Workflow Designer for web service blocks - they overwrite the default request body; they could overwrite the custom one as well (or have it as an option) and it should not be a problem (since validator would be used on store and info/edit dialogs).

If added, this would enable developers to send less data to a webservice (e.g. we need only 2 out of 150 fields from a store dialog to validate), allowing us to:
• send fixed values,
• send hidden fields' values (welcome back, cleaner store dialogs) and
• overall speeding up the whole process (since we decide which fields we need, instead of sending all the visible ones).