Hello.
We re-requested the transfer of TTN to prom.ua - according to the documentation
https://public-api.docs.prom.ua/#/Delivery/post_delivery_save_declaration_id, we received the response {"status":"success"} - that is, the TTN must be transferred and updated.
Please check on the promo, and our next steps are:
1. if the TTH has been updated - then we will need a test process, on which we will check directly during the initial switching for an error from Prom.ua or a problem with the transfer on our part
2. if the TTN has not been updated, it will be necessary to write this question to technical support, why, when using the above documentation method, the invoice number is not updated