To upload PO text

Hi friends

I am uploading PO text through LSMW. Iam using the program RMDATIND. I had created a source structure with the fields as in the flat file .The fields given in the flat file are MATNR , WERKS , SPARS and the long text. I had maaped fields MATNR , WERKS IN BMM00 and in BMMH7 I had specified TDID as 'BEST , TDSPRAS as 'E' ., TDFORMAT as '*' and MAPPED TDLINE . I am getting the following errors .

1. Conversion error: field BMMH7-TDSPRAS; content

2. Transaction code / does not exist (table T130M)

Can any one help me

Thanks in advance.

Sathya.