I am trying to execute SHOP_MATERIAL_ALLOC_API.MODIFY__ over an external Oracle database connection as part of a mobile application.  I am able to call many other inventory and shop order APIs.  But, this one is giving me the following error.  The IFS version is App 7.  Any guidance is appreciated.

ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "IFSAPP.CLIENT_SYS", line 31
ORA-06512: at "IFSAPP.SHOP_MATERIAL_ALLOC_API", line 2965
ORA-06512: at line 1

I am executing the API as follows:

sSQL = " BEGIN" & _         " IFSAPP.SHOP_MATERIAL_ALLOC_API.MODIFY__(?,?,?,?,?);" & _         " END;"    Call setUpProcIFS(spProc, sSQL)  sAttr = "'ISSUE_TO_LOC' || CHR(31) || '10-4-1' || CHR(30) || 'OWNING_VENDOR_NO' || CHR(31) || '' || CHR(30) || 'OWNING_CUSTOMER_NO' || CHR(31) || '' || CHR(30) || ''"  spProc.CreateParameter(0, dbVarChar, dbParamOutput,       32000, Null)  spProc.CreateParameter(1, dbVarChar, dbParamInput,        32000, sObjId)  spProc.CreateParameter(2, dbVarChar, dbParamInput,  32000, sObjVer)  spProc.CreateParameter(3, dbVarChar, dbParamInput,  32000, sAttr)  spProc.CreateParameter(4, dbVarChar, dbParamInput,        32000, "DO")

I am reading the object ID and object version from the SHOP_MATERIAL_ALLOC table prior to executing the API.

I used the following debug log as an example:

DECLARE
   a_   VARCHAR2(32000) := NULL;     -- __lsResult
   b_   VARCHAR2(32000) := 'AAANRgAASAACgmFAAS';     -- __sObjid
   c_   VARCHAR2(32000) := '20250924155409';     -- __lsObjversion
   d_   VARCHAR2(32000) := 'ISSUE_TO_LOC' || CHR(31) || '10-4-1' || CHR(30) || 'OWNING_VENDOR_NO' || CHR(31) || '' || CHR(30) || 'OWNING_CUSTOMER_NO' || CHR(31) || '' || CHR(30) || '';     -- __lsAttr
   e_   VARCHAR2(32000) := 'DO';     -- __sAction
BEGIN
   IFSAPP.SHOP_MATERIAL_ALLOC_API.MODIFY__( a_, b_, c_, d_, e_ );

   -------------------------------------------
   --- Dbms_Output Section ---
   -------------------------------------------
   Dbms_Output.Put_Line('a_ = ' || a_);
   Dbms_Output.Put_Line('b_ = ' || b_);
   Dbms_Output.Put_Line('c_ = ' || c_);
   Dbms_Output.Put_Line('d_ = ' || d_);
   Dbms_Output.Put_Line('e_ = ' || e_);
   -------------------------------------------
END;