Default value of the threadpoolsize agent affects batch indexing
Valid from Pega Version 8.5.2
After you patch Pega Platform to version 8.5.2 or higher, the system changes the default value of the threadpoolsize agent, which controls the number of concurrent activities (threads) in the system, from 5 to 15. Batch indexing in Pega Platform™ does not require all 15 threads, so you can change the agent value to increase system performance by managing the indexing/distributed/batch/numworkers dynamic system setting.
If your deployment does not support that setting, and batch indexing does not use Queue Processors, the system uses the threadpoolsize value for batch indexing instead.
For more information, see Editing a dynamic system setting.
New dynamic setting to manage validation of hidden fields
Valid from Pega Version 8.6.4
Pega Platform™ version 8.6.4 introduces a new DSS setting for Theme Cosmos and other section-based applications. The validateHiddenField setting controls whether the application validates fields that you hide through visibility rules. By default, validateHiddenField is set to true, which means that the application fields are validated for completeness even if they are not displayed in the form. You can also switch off this functionality by changing the setting value to false.
For more information, see Managing field validation in hidden sections.