Based on the error message Error saving Probing Question, this looks more like a custom error thrown by a validation rule, Flow/Apex logic, rather than an issue with the lightning-record-edit-form itself.
If you are looking for customizing the lightning-record-edit-form behaviors you can use this as reference Overriding Default Behaviors :
To customize the behavior of your form when it loads or when data is submitted, use the onload and onsubmit attributes to specify event
handlers. If you capture the submit event and submit the form
programmatically, use event.preventDefault() to cancel the default
behavior of the event. This prevents a duplicate form submission.
Errors are automatically handled. To customize the behavior of the form when it encounters an error on submission or when data is
submitted successfully, use the onerror and onsuccess attributes to
specify event handlers.
Here are some example event handlers for onsubmit and onsuccess.
handleSubmit(event){
event.preventDefault(); // stop the form from submitting
const fields = event.detail.fields;
fields.Street = '32 Prince Street';
this.template.querySelector('lightning-record-edit-form').submit(fields);
}
handleSucess(event){
const updatedRecord = event.detail.id;
console.log('onsuccess: ', updatedRecord);
}
To see all the response data:
handleSuccess(event){
const payload = event.detail;
console.log(JSON.stringify(payload));
}
