I am trying to join trip information to the accounting document based on

BKPF-XBLNR = V_PTRV_SREC-REINR
OR
BSEG_ZUONR = V_PTRV_SREC-REINR

However, the data type for BKPF-XBLNR is CHAR(16), BSEG_ZUONR is CHAR(18), but V_PTRV_SREC-REINR is NUMBER(10). My ABAP join condition returned no records.

How to resolve such problem?

select BUKRS BELNR GJAHR BLART BUDAT
into (BKPF-BUKRS,BKPF-BELNR,BKPF-GJAHR,BKPF-BLART,BKPF-BUDAT)
from BKPF
where
(BKPF_clause).
select BUKRS BELNR GJAHR ZUONR
into (BSEG-BUKRS,BSEG-BELNR,BSEG-GJAHR,BSEG-ZUONR)
from BSEG
where
BUKRS = BKPF-BUKRS
and BELNR = BKPF-BELNR
and GJAHR = BKPF-GJAHR
and
(BSEG_clause).
select PERNR REINR EXP_TYPE REC_AMOUNT REC_CURR FROM_DATE TO_DATE
C_DOC C_TXT
into (V_PTRV_SREC-PERNR,V_PTRV_SREC-REINR,V_PTRV_SREC-EXP_TYPE,
V_PTRV_SREC-REC_AMOUNT,V_PTRV_SREC-REC_CURR,
V_PTRV_SREC-FROM_DATE,V_PTRV_SREC-TO_DATE,V_PTRV_SREC-C_DOC,
V_PTRV_SREC-C_TXT)
from V_PTRV_SREC
where
( ( REINR = BSEG-ZUONR ) )
and
(V_PTRV_SREC_clause).