Calling a PAL procedure with in a standard procedure in SAP HANA

Hi,

I am creating a standard SQL procedure , while including a call for PAL Procedures such as CHAID, APRIORI. I am facing a error like:

Could not execute 'create procedure PREDICTION_ALGORITHM (IN CUSTOMER_ID integer) AS BEGIN DELETE FROM ...' in 257 ms 933 µs . SAP DBTech JDBC: [7] (at 597): feature not supported: Only table variable is allowed in input parameter in a nested call: line 17 col 36 (at pos 597)

This error is specific to statement for PAL procedure call included in the procedure. For example in my case:

CALL _SYS_AFL.CHAID_CUSTOMER("ZOM"."CUSTOMER_CHAID_INPUT", "ZOM"."CUSTOMER_CONTROL_TAB", "ZOM"."CUSTOMER_JSONMODEL_TAB", "ZOM"."CUSTOMER_PMMLMODEL_TAB");

Is it a product limitation!?

Warm Regards

Sushant Jain