Product:
Planning Analytics 2.0.9.19
TM1_version=TM1-AW64-ML-RTM-11.0.919.10-0
TM1_name=IBM Cognos TM1
Issue:
How export dim values to SQL?

Solution:
Create a TM1 TI process that have the dimension as a data source. Set the variable name to account, and as string. On the TM1 server create a ODBC connection to the SQL database.

Enter code similar to this:
#Section Prolog
sDimension = 'plan_chart_of_accounts' ;
sSource = 'OdbcDatabasename' ;
sClient = 'sql login user' ;
sPassword = 'sql login password' ;
sUseUnicodeODBC = 1 ;
ODBCOpenEx(sSource, sClient, sPassword, sUseUnicodeODBC) ;
#Section Metadata
#Section Data
sSQL = '';
CountofParent = ElParN( sDimension , Account);
ElementLevel = ElLev( sDimension , Account);
ParentCounter = 0;
WHILE (ParentCounter <= CountofParent);
ParentElement = ElPar( sDimension, Account ,ParentCounter);
sSQL = Expand('INSERT INTO dbo.AccountTable (Account, parentelement, countofparent, elementlevel) VALUES (''%Account%'',''%ParentElement%'',''%CountofParent%'', ''%ElementLevel%'')');
ODBCOutPut( sSource , sSQL );
ASCIIOutput( 'd:\temp\debug.txt', Account, ParentElement , NumberToString( CountofParent ) , NumberToString( ElementLevel ) );
ParentCounter = ParentCounter+1;
END;
#Section Epilog

You need to adjust the TM1 code to be working for you.
More Information:
https://github.com/cubewise-code/bedrock
https://cubewise.com/blog/mastering-hierarchies-in-ibm-tm1-and-planning-analytics/
https://exploringtm1.com/unwinding-removing-the-structure-from-a-dimension/
https://lodestarsolutions.com/level-0-not-leaf-planning-analytics-tm1-set-editor/
https://cubewise.com/functions-library/tm1-function-for-rules-ellev/
https://cubewise.com/functions-library/tm1-function-for-ti-odbcopenex/
https://quebit.com/askquebit/how-to-speed-up-tm1-odbc-output/
https://jpbi.blogspot.com/2007/05/sql-trick-for-flattening-parent-child.html
https://www.ibm.com/support/pages/ibm-planning-analytics-20-fix-lists