Published Release Notes

Support for advanced validation of embedded and referenced data

To help you define validation conditions for a broader range of use case scenarios, Pega Platform™ now supports stage entry validation for embedded fields in the form of a validation matrix. You can now define validation conditions for both field groups and field group lists, and easily navigate between them. You can also select any fields and when conditions while building a condition for both field-level and stage-level validation.

For more information, see Validating field values for stage entry.

Complete email and notification approval in App Studio

App Studio now supports complete email approval configuration directly in the Case Designer. Email approval settings now include composing a new message or selecting a template, saving templates to a library for future reuse, and adding attachments to an email. Additionally, you can now send the approval as a push notification to mobile users. With full configuration of email approval in App Studio, you save time and create unique and personalized email messages and push notifications in a no-code, intuitive way. 

For more information, see Obtain approvals from email and push notifications from App Studio (8.5), Requesting approval by email and push notification.

Business logic routing of approval steps

Pega Platform™ now supports routing of approval steps by applying business logic, in both App Studio and Dev Studio. Business logic uses a set of conditions to determine the most appropriate worker to approve a case by routing the approval based on defined conditions. For example, in a loan request case, the application can route the approval step to a manager if the importance of the case is set to high. For greater accuracy, business logic can also use skill set, availability, and workload to determine the appropriate worker. With business logic routing, you increase work efficiency and speed up case resolution.

For more information, see Determine a relevant case approver by using business logic (8.5), Requesting approval from users.

Default Create stage in a case life cycle

Pega Platform™ now adds a default Create stage to a case life cycle every time you create a new case type, both in App Studio and Dev Studio. The default Create stage includes a view that users interact with to provide initial data before case processing begins. Consequently, you can now easily locate the view to make any necessary changes. In the background, the Create stage makes a case type independent from the starting process, which removes relevant advanced configurations and makes application development faster.

For more information, see Capture initial data faster with the default Create stage (8.5), The Create stage.

New JWT access token format: Authorized Access Token

Pega Platform™ is changing from using opaque tokens to using JSON Web (JWT) tokens and the JWT access token format: Authorized Access Token (AAT). An AAT enables a client application to validate the server for user permissions and authorizes a specific application to access specific parts of a user’s data.

The major benefits to using the JWT format are:

• The JWT is a self-contained token that has authentication information, expire time information, and other user-defined claims digitally signed.
• A single token can be used with multiple applications.
• The tokens are short-lived and can minimize damage if transport security is compromised, as the token signature is verified.
• As the token is verified with the signature, there is no need to verify against a database, thus reducing latency (usually important for Web APIs).

For more information, see Understanding authorized access tokens.

Improvements to OAuth 2.0 Services with Token Introspection Service and Token Denylist Service

Increase the security of user sessions by using the newly supported Token Introspection and Denylist services for OAuth 2.0.

Token Introspection service

Use the Token Introspection service to validate JSON Web Tokens (JWT). The Token Introspection service requires authentication. 

Pega now uses OAuth 2.0 access tokens called Authorized Access Tokens (AAT). 

Token Introspection service endpoint

The Token Introspection service endpoint provides the information about the status of access token and refresh token. Token introspection can be used to validate if a given token is still active or inactive. The token introspection endpoint determines whether the token is valid. The status indicates whether an access token or refresh token is valid or invalid: 

• Valid tokens have the “active”:true status
• Invalid tokens have the “active” :false status.

The inactive status can also be due to revocation. 

Token Denylist service

You can add tokens to the deny list in cases where suspicious activity might have occurred. The Token Denylist service provides a method for denying user access to the application by revoking the user's access token. This service can prevent a token from being used more than the specified number of times, which can be helpful in preventing replay attacks. Stolen tokens should be revoked using this service. A GET API is also available to get the list of denied tokens.

Keys endpoint

Pega Platform™ is changing from using opaque tokens to JSON Web (JWT) tokens. If this JWT is used by any other system, the public key is needed for signature verification. A new endpoint is exposed to provide these public keys in JWK format: https://host:port/prweb/api/oauth2/v1/token/keys.

For more information, see OAuth 2.0 Management Services.

Enhanced refresh token strategy

You now have more precise control over your refresh token expiration strategy. When a refresh token is enabled, you can choose to set its initial expiration based on the value provided by the IDP. The refresh token expiry can be derived from IDP’s session timeout when SSO is used with external IDP for user authentication in the authorization code grant flow. You can also specify a separate refresh token expiration strategy based on your use-case. 

These can be configured in the OAuth2 Client registration rule form.

For more information, see Enhanced refresh token strategy.

Enhancements to token lifetime limits

Pega Platform™ uses OAuth 2.0 authorization codes, access tokens, and refresh tokens to provide flexible token-based security for applications. Expiration settings for these codes and tokens now adhere to certain strict value range based on industry leading practices. For example, the lifetime specified for the authorization code must be in the range 1-600 seconds.

These can be configured in the OAuth2 Client registration rule form.

For more information, see OAuth 2.0 Management Services.

Improving basic access control

Pega Platform™ has implemented a new basic access control (BAC) to protect your application from unauthorized server calls from otherwise authenticated users.

For more information, see Access Control Checks.

Upgrade impact

After you upgrade to Pega 8.5, all the functionality in the model configurations that use auto-generated controls and actions continues to work as before. However, you must secure any customized JavaScript in your application layer that makes AJAX (server) calls  by using registration or encryption mechanisms.

What steps are required to update the application to be compatible with this change?

After upgrade, to migrate custom JavaScript functionality, see Access Control Checks.

Addition of Data Access Tab to access control policy condition rules

You can now select associations and declarative index classes when creating access control policy condition rules. The Column source field in the policy condition can now accept properties from available associations and indexes. For ease of reference, the selected associations and indexes are available on the new Data Access tab. 

Using the new tab, you can build complex authorization models in which access restrictions for a class depend on the attributes present in the associated and indexed classes, along with the attributes in the current class. For example, a project management application can now separately maintain project lists for each operator and use that information to restrict read/write access to unique projects.

The information available on the new Data Access tab reflects rule form changes, which are similar to the existing functionality of the Report Definition in the Application Data Model. 

For more information, see Creating an access control policy condition.