Alter table Error while increasing size of decimal datatype for column table

Hi All,

I have a column table

create column table "myschema"."tab1" ("col1" varchar(10), "col2" decimal(5,2));

I inserted 10 rows of data . Now I want to change the datatype of my col2 to decimal(6,2), hence tried the following as suggested in SAP HANA SQL guide,

ALTER TABLE "myschema"."tab1" ALTER ("col2" decimal(6,2) CS_FIXED);

which gives the following error,

Could not execute 'ALTER TABLE "myschema"."tab1" ALTER ("col2" decimal(6,2) CS_FIXED);' in 5.354 seconds .

SAP DBTech JDBC: [2048]: column store error: modify attribute error:  [6924] Attribute save failed;index=myschema:tab1,attribute='<attribute unknown (id=211)>' (211),object=myschema:tab1

In the SQL Guide, it is mentioned

For column table, only increasing the size of a column data type is allowed to prevent data loss. For example, changing from nvarchar(20) to nvarchar(10) or from integer to tinyint will raise an error.

My table is a column table and I am only increasing the datatype size from decimal (5,2) to decimal(6,2). so Ideally, it should work.

Please help in understanding why I am getting the above error ;

Thank you,

Gayathri Ramesh