typedef struct tagCUNBAPRM {
long           Version;              /* Structure version number    */
long           Length;               /* Length of  structure        */
long           Res1;                 /* Reserved                    */
void   *       Src_Buf_Ptr;          /* Pointer to Source           */
unsigned long  Src_Buf_ALET;         /* ALET of source buffer       */
unsigned long  Src_Buf_Len;          /* Length of source data       */
long           Res2;                 /* Reserved                    */
void   *       Targ_Buf_Ptr;         /* Pointer to Target           */
unsigned long  Targ_Buf_ALET;        /* ALET of target buffer       */
unsigned long  Targ_Buf_Len;         /* Length of target buffer     */
char           Conv_Handle[64];      /* conversion handle           */
unsigned char  Conv_Type;            /* conversion type             */
char           Res3[3];              /* Reserved                    */
char           Locale[32];           /* LOCALE                      */
long           Res4;                 /* Reserved                    */
void   *       DDA_Buf_Ptr;          /* Pointer to dynamic data area*/
unsigned long  DDA_Buf_ALET;         /* ALET of DDA                 */
unsigned long  DDA_Buf_Len;          /* Length of DDA               */
 struct {
  int           Inv_Handle      : 1,  /* Invalid handle action:      */
                                      /* 0 = Terminate with error    */
                                      /* 1 = Get new handle and      */
                Not_Last_Buf    : 1,  /* Buffer contains last        */
                                      /* Source Character            */
                                      /* 0 = Src_Buffer is last/only */
                                      /* Buffer of complete src data */
                                      /* 1 = Another buffer follows  */
                Page_Fix        : 1,  /* Page fixing:                */ 
                                      /* 0=System storage            */
                                      /* 1=Page Fixing.              */ 
                                : 5;
  } Flag1;                            /* FLAG Byte 1 set by caller   */
 struct { 
  int           Locale_Support  : 1,  /* Locale support:             */ 
                                      /* When RC/RS <> 8/4 meaning:  */
                                      /* 0 = Locale supported        */ 
                                      /* When RC/RS = 8/4 meaning:   */ 
                                      /* 1 = Invalid Locale name     */ 
                                      /* When RC/RS <> 8/4 meaning:  */ 
                                      /* 1 = Locale Not supported    */ 
                                      /* (locale name is valid)      */ 
                                 : 7; /* Padding                     */ 
  } Flag2;                            /* Flag2 - set by the service  */  
 unsigned char  Res5[2];              /* Reserved                    */
 long           Return_Code;
 long           Reason_Code;
 unsigned char  Res6[3];              /* Reserved                    */ 
 unsigned char UniVersion;            /* Unicode Data version        */ 
 } CUNBAPRM;