Cannot select blocked locations when editing a firm

This section provides information on a validation error.

Workflow Table	Type	Description	Workflow Conditions
Firm	Change	Blocked Locations cannot be selected (Change)

Action	Column (Field) Change Properties	Description	Action Conditions
Column (Field) Change	Column: ClientCustomTabFields.CustWorkflowBlockedLocation New Value SQL Expression: If this is True: (select custBlocked from UDIC_Location where UDIC_UID='[:ClientCustomTabFields.custLocation]')='[BLOCKED]' Use this Calculation: 'Y' Otherwise, Use This Calculation: 'N'	Test if blocked Location was selected	ClientCustomTabFields.CustLocation not empty AND ClientCustomTabFields.CustLocation has changed
Validate Error		You've chosen a blocked Location. Please select a different Location.	ClientCustomTabFields.CustWorkflowBlockedLocation equals Y