LSMW Error message "Editing was terminated"

hi..created lsmw with Object

0050 Customer master

Method 0000

Program Name RFBIDE00

Program Type B Batch Input

it upload only first record and for next it shows editing was terminated

FB012 Session 1 : Special character for 'empty field' is /

FB007 Session 1 session name CUST_REC was opened

FB109 Trans. 1 : Transaction xd01 is not supported

FB016 ... Last header record ...

FB014 ... BKN00-STYPE 1

FB014 ... BKN00-TCODE xd01

FB014 ... BKN00-KUNNR customer

FB014 ... BKN00-BUKRS titl

FB014 ... BKN00-VKORG sale

FB014 ... BKN00-VTWEG di

FB014 ... BKN00-SPART di

FB014 ... BKN00-KTOKD sort

FB014 ... BKN00-KKBER coun

FB013 ....Editing was terminated

can anyone help ?