NamedParameterJdbcTemplate batchUpdate not working for merge - spring

Question

I am running the below merge query using NamedParameterJdbcTemplate batchUpdate.
The batchUpdate(String sql, SqlParameterSource[] batchArgs) works for batchArgs with 1 item and does not work for multiple items. Below is the query and I renamed table column names.
The NamedParameterJdbcTemplate.batchUpdate works if run for each array item seperately or if run as NamedParameterJdbcTemplate .update()
Sql Query:
MERGE INTO tableName C1 USING (VALUES (:f1)) AS C2(Field1)
ON (C1.CMP = C2.CO_C)
WHEN MATCHED THEN
UPDATE SET Field2 = :date1, Field3 = :time1, Field4 =:userId
WHEN NOT MATCHED THEN
INSERT (Field5, Field1, Field4, Field2, Field3) VALUES (:offCC, :f1,:userId, :date1, :time1)
[err] SQL exception:
[err] Message: [jcc][t4][102][10040][4.22.29] Batch failure. The batch was submitted, but at least one exception occurred on an individual member of the batch. Use getNextException() to retrieve the exceptions for specific batched elements. ERRORCODE=-4229, SQLSTATE=null
[err] SQLSTATE: null
[err] Error code: -4229
[err] SQL exception:
[err] Message: VARIABLE IS NOT DEFINED OR NOT USABLE.
SQLCODE=-312, SQLSTATE=42618, DRIVER=4.22.29
[err] SQLSTATE: 42618
[err] Error code: -312
[err] SQL exception:
[err] Message: Error for batch element #1: VARIABLE IS NOT DEFINED OR NOT USABLE
[err] SQLSTATE: 42618
[err] Error code: -312