PA Error: SAP DBTech JDBC [259] invalid table name PROCEDURE_SIGNATURE_T

Hi Experts,

I am getting this error message about PROCEDURE_SIGNATURE_T table being an invalid table name while using the most of PAL functions through Expert Analytics (Some functions work without problem like Decision tree 4.5).  We 're on HANA revision 93, PA version 2.3.

I saw SAP note 2128915 that recommend revision 96 (93 is for test and evaluation only) and in other SCN question that hana revision 96 + PA 2.2 + APL 2.2 will be OK:

I want to know where installing this APL , is it a component of hana database like PAL ?  and which version will be compatible with PA 2.3  ?

Best regards,

Abdess