SAP DBTech JDBC: [2048]: column store error: search table error: [34023] Internal error during instantiating calculation model

HI All,

I have created one calculation view, which has lot of measure and dimensions.

and when tableau is firing SQL query on that then i am getting error in CASE statement.

for example.

if case statement is using dimension (POSNR).

SELECT

(CASE WHEN ("POSNR" =0) THEN 'True' ELSE 'False' END) As "ABC",

"POSNR" AS "POSNR",

"VBELN" AS "VBELN",

  EXTRACT(MONTH FROM TO_DATE("ERDAT")) AS "mn_ERDAT_ok",

  EXTRACT(YEAR FROM TO_DATE("ERDAT")) AS "yr_ERDAT_ok" 

FROM "_SYS_BIC"."CA_ABC"

its running fine.

if case statement is using Measure (KWMENG).

SELECT

(CASE WHEN ("KWMENG" =0) THEN 'True' ELSE 'False' END) As "ABC",

"POSNR" AS "POSNR",

"VBELN" AS "VBELN",

  EXTRACT(MONTH FROM TO_DATE("ERDAT")) AS "mn_ERDAT_ok",

  EXTRACT(YEAR FROM TO_DATE("ERDAT")) AS "yr_ERDAT_ok" 

FROM "_SYS_BIC"."CA_ABC";

Error:SAP DBTech JDBC: [2048]: column store error: search table error:  [34023] Internal error during instantiating calculation model.

i think we can't use measure in CASE statement could you please let me know the reason.