Create index error on columnar table column

Hi,

I am trying to create index on empty columnar table but it is throwing error .

Syntax :

create index SOURCE_SYSTEM_NAME_LF on RBA.SOURCE_SYSTEM (SOURCE_SYSTEM_NAME ASC);

Error:

Could not execute 'create index SOURCE_SYSTEM_NAME_LF on RBA.SOURCE_SYSTEM (SOURCE_SYSTEM_NAME ASC)' in 6.137 seconds .

SAP DBTech JDBC: [2048]: column store error: set index flag error:  [3400013] Attribute save failed;index=RBA:SOURCE_SYSTEMen,attribute='SOURCE_SYSTEM_NAME' (202)

I have created index on different var column in the table then it created.

create index SOURCE_SYSTEM_DESC_LF on RBA.SOURCE_SYSTEM (SOURCE_SYSTEM_DESC ASC);

above syntax is working properly.

But first one is throwing the error.

Please help me , how to resolve this issue.

Thanks & Regards,

Ramana.