This happens because the Mass Add feature in Apsona only works on records that are manually selected on the current results page. Even when increasing the “Rows per page” setting, the maximum number of records that can be selected at one time is limited (up to 1,000). It does not support selecting or processing tens of thousands of records in a single action.
In this case, the customer attempted to use Tools → Mass Add → Ratings to apply the same Rating to 50,000 Account records. However, Mass Add only applies to records selected on the visible page, which is expected system behavior and not an error.
Since the requirement was to add the same Rating to all 50,000 Accounts, a bulk operation approach was recommended instead.
The solution was to use the Import/Update tool:
Export or reuse a file containing the Account IDs.
Add a column for the desired Rating value.
Import the file into the Ratings object using Tools → Import/Update, mapping:
Account ID → Account lookup field
Rating → Rating field.
This method allows Rating records to be created for all 50,000 Accounts in a single operation.
As an alternative, if the goal was to update a standard Rating field directly on the Account object, Tools → Update All can be used to update all filtered records at once.
The customer confirmed that the bulk update was completed successfully using this approach.