# Application Services

> Browse PeopleSoft Application Services Framework (ASF) definitions — REST APIs backed by application classes, with their operations, URI templates, parameters, result states, header properties, and security.

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Site [llms.txt](/llms.txt)

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    <span>Tailored Operational Context</span>
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An Application Service is an Application Services Framework (ASF) definition, stored in `PSIBAPPLDEFN`. It exposes a REST API backed by application classes, without the hand-built service operations that classic Integration Broker requires. psLens consolidates the service's operations, URI templates and REST methods, method parameters, result-state-to-HTTP-status mappings, header properties, and security grants onto one page.

## Object Relationships

Application Services define REST API boundaries over Application Classes:

- **Exposes REST URIs & Operations**: Application Services (`PSIBAPPLDEFN`) define REST operations (`PSIBAPPLOPR`) and URI templates (`PSIBAPPURI`) mapped to HTTP methods.
- **Backed by Application Classes**: Operations execute underlying Application Package handler classes.
- **Secured by Permission Lists**: Permission lists (`PSAUTHAS`) authorize access to specific Application Services.

## How psLens Improves Application Service Inspection

In PIA, inspecting Application Services Framework (ASF) REST APIs requires switching across operation, URI, parameter, and result-state tabs, then checking Web Services security for each permission list separately.

psLens combines the complete REST API surface—operations, URI templates, HTTP methods, parameters, result state mappings, and security grants—on a single page.

## Search Page

URL: `/appservices?db={database}`

Wildcard `%` search supported. Search runs against the ASF definitions in `PSIBAPPLDEFN`. Each result card links to the application service detail page.

## Detail Page

URL: `/appservices/{APPLNAME}?db={database}`

The main pane shows the service properties and an always-visible **Operations & REST Surface** card: each operation's handler application class, plus a table of its URI templates with the REST methods (GET, POST, PUT, DELETE) mapped to each. The sidebar has four related-data toggles.

## Related Data Panels

### Parameters

Method parameters for the service's operations, read from `PSIBPARAM` and the related base/template parameter tables.

### Result States

The mapping from operation result states to HTTP status codes (`PSIBAPPLSTATES`) — what status a caller receives for each outcome.

### Header Properties

Header properties configured for the service (`PSIBAPPLHDRPROP`).

### Security

Permission lists that grant access to the application service, read from `PSAUTHAS`. The answer to which permission lists let a user call this REST API.

## Tables Used

- `PSIBAPPLDEFN` — application service (ASF) definitions
- `PSIBAPPLOPR` — operations and handler classes
- `PSIBAPPURI` — URI templates
- `PSIBAPPMETHOD` — REST method configuration
- `PSIBPARAM`, `PSIBBASEPARAM`, `PSIBTEMPLPARAM`, `PSIBBASETMPLPRM` — method parameters
- `PSIBAPPLSTATES` — result-state to HTTP-status mappings
- `PSIBAPPLHDRPROP` — header properties
- `PSAUTHAS` — application service authorization per permission list
- `PSSERVICEOPR` — service operations within the service