Sap LSMW Standard Batch Input error while posting GL Account master Data ?

[ravilla]

HI Experts,

for Data upload I am using LSMW for Standrad Batch Input, I am going by step by step everything going smoothly up to Convert Data, when i reach step " Create Batch Input session", am getting below error,"first record in file XXXXX is not session record type (0)". can any one help me on this early its greatly appreciative.

i gone through all posts no body explain this error .

Thanks

Ravilla