Is the SMS notification of creditor's rights transfer valid?

According to the query search network, it is effective to notify the debtor by SMS when the creditor's rights are transferred, if it is to inform the debtor. When the creditor transfers its creditor's rights, it must notify the debtor. The notification methods include oral notification and written notification, as long as it is notified to the debtor.

Article 545 of the Civil Code A creditor may assign all or part of his creditor's rights to a third party, except in one of the following circumstances: according to the nature of his creditor's rights, he may not assign them; Not transferable according to the agreement of the parties; Not transferable according to law. If the parties agree that the non-monetary creditor's rights cannot be transferred, they may not confront a bona fide third party. If the parties agree that the creditor's rights are not transferable, they may not oppose a third party. Article 546 Assignment of Creditor's Rights Without notifying the debtor, the assignment shall not have effect on the debtor. The notice of assignment of creditor's rights shall not be revoked, except with the consent of the transferee. Article 547 Where a creditor assigns a creditor's right, the assignee obtains the subordinate rights related to the creditor's right, except that the subordinate rights belong exclusively to the creditor. The transferee's acquisition of subordinate rights is not affected by the failure to go through the transfer registration formalities or transfer possession of subordinate rights.