Unable to change the Start date of the Week in Time Scale Value views from Monday to Sunday

Document ID : KB000109739
Last Modified Date : 03/08/2018
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Issue:
Even though Start Day of Week is set to Sunday in Project Management Settings, unable to see the TSV (portlet time scaled value) data start on Sunday.
Resolution:
This is working as designed. As referenced in the documentation, the setting 'Start Day of Week' in Administration->Project Management->Settings is used for Resource Calendars and Schedulers (such as Open Workbench (OWB)).

Time Scale Value grids in Classic PPM (for non-fiscal calendar TSV periods using a weekly scale) will use the Datamart ISO calendar. (See more details on the Datamart ISO calendar at: KB000027248)

Exceptions where you are able to specify a different start day aside from the ISO Standard day of Monday would include Time Reporting Periods, which uses a separate setting. There are also some reports that utilize parameter settings.