Tasks Workspace views do not display data

Products

• Clarity PPM On Premise
• Clarity PPM SaaS

Issue/Introduction

Tasks Workspace views do not display data correctly, if an existing view refers to a Task object virtual attribute and the same virtual attribute is part of a project business rule.

STEPS TO REPRODUCE:

1. Classic > Administration > Studio > Project object > Attributes tab
2. Create a lookup attribute based on a static lookup: MyCustomLkp. Above waterline lookup can be used for the testing purposes
3. Classic > Administration > Studio > Task object > Attributes tab 
4. Create a virtual attribute of the above project custom field: MyCustomVirtualTaskLkp
5. In Clarity MUX > Create a project and create a few tasks
6. On the project grid, add the project custom column and fill it in, let say with Above Waterline value
7. In Clarity MUX > Go to the Tasks workspace
8. Create or access a view with no filtering. Notice data is displayed
9. Create a new view and add the custom project field to the filter and choose both Below Waterline and Above Waterline values to the filter
10. Data gets displayed in both views: the one with filtered criteria and the one with no filters
11. MUX > Administration > Blueprints > Create a project blueprint
12. On the Rules tab > Create a rule:
    • Target object: Task
    • Rule Type: View Page   
    • Conditions: MyCustomVirtualTaskLkp=Above Waterline and Access Groups != ABC   
    • Actions: Disable Editing Attributes > Disable All Except Selected > Choose some fields
13. Activate the rule and publish the blueprint
14. Associate the project in Step 5 to the blueprint
15. Go back to the Tasks Workspace and navigate through the views.

Expected Results: All views display data accordingly.
Actual Results: Some views do not display the data as expected (for example the one with no filtering criteria) 

Environment

Clarity 16.2.3 to 16.4.1

Cause

This i caused by DE182581

Resolution

This is fixed in Clarity 16.4.2

Additional Information

app-ca.log file registers the following:

ERROR 2026-02-13 03:18:46,459 [http-nio-8080-exec-1159] odata.EntitiesResponseImpl (clarity:myuser:mysession) Exception reading objects: oba_task

com.niku.union.persistence.PersistenceApplicationException

at com.niku.union.persistence.PersistenceController.handleSQLException(PersistenceController.java:2529)

 

ERROR 2026-02-13 03:18:59,022 [http-nio-8080-exec-1155] persistence.PersistenceController (clarity:clarity:myuser:mysession) Error happened with error code:42P01

ERROR 2026-02-13 03:18:59,022 [http-nio-8080-exec-1155] union.persistence (clarity:myuser:mysession):PPM_REST_API)  Exception on odf-pmd.oba_task.select-list-rest-api-conditional.map statement null

org.postgresql.util.PSQLException: ERROR: missing FROM-clause entry for table "project____odf_ca_project"

  Position: 3381