Having checked this again, for some reason it did not confirm the reconciliation so I tried again, and noticed that it updated the transaction with the correct VAT. So it's just the last part which needs to be changed.
are the activity set as Hansamanuals said?
https://www.hansamanuals.com/main/mailnumber___62526/theconf___231/manuals/version___20250224/langcode___es/hwconvindex.htm?shortcode=HW0301SETTINGS_Order...
SendWebRequest3 is a boolean function, so if this returns true and the reply header has an accepted status, you can assume that the data was sent successfully and perform some actions on the record th...