Error upon repricing orders in Revenue Cloud

With the Summer '26 release, the following error is thrown upon repricing an order in Revenue Cloud if some of the used custom tags within the pricing procedure are not mapped via OrderEntitiesMapping -

We couldn't refresh the prices. Ask your Salesforce admin for help.
We couldn’t fetch the data for ExtSalesTransactionContext context definition. Try again later or contact your Salesforce admin for help.

Here, ExtSalesTransactionContext is the name of the currently used extended SalesTransaction context definition.