3801757 - Custom sorting not working and save button disabled in Planner Workspaces

The custom sorting features introduced in 2608 upgrade is not working, getting an error, saying: "you can define a custom sorting rule with a maximum of 0 attribute values".

Also, the save custom sorting button is disabled.

Planner Workspaces

custom sorting, 2608 upgrade, planner workspaces, save custom sorting disabled, apply button greyed out, sorting error, filtering attribute values, MAX_SORTING_VALUES, global parameter, ibp, fiori, sorting limit, performance limit, workspace settings, attribute filter , KBA , SCM-IBP-PWS , Planner Workspaces , Problem