The Accounts Payable cube cube either does not exist or has not been processed.

After deployed the Cubes showing error message :
The Accounts Payable cube cube either does not exist or has not been processed. 

Solution:
System Administrator > Setup > Business Intelligence > Analysis Services > Analysis Servers
 Configure the Default Database "Dynamics initial" in OLAP database TabPage

How to update Label Id to String through X++ code

static void Lableid2str(Args _args)
{
RetailChannelReport     retailChannelReport;
;
ttsBegin;
while select forUpdate retailChannelReport
{
retailChannelReport.ReportName = SysLabel::labelId2String2(retailChannelReport.ReportName, 'en-us');
print retailChannelReport.ReportName;
retailChannelReport.doupdate();
 }
ttscommit;
pause;
}