You will surely remember that update 12.0.3 of Nintendo Switch It was released this week and then pulled a few hours later by Nintendo. Finally the company redistributed it to users, but it seems that this patch continues to give problems.
There are users who report that they cannot download the games you have already purchased from the eShop. The error code 2123-1502, which is not solved even by following the steps specified by Nintendo. Customer Service has confirmed that Nintendo is assessing the situation and are aware of the issues.
Some players mention that the SAT has helped them reestablish the cache from your console over the phone, but this has not been confirmed to resolve the error. There are also users who indicate to manually change the DNS configuration
We will be attentive to more details. In the meantime, do not hesitate to leave any errors you have suffered in the comments.