BTE/Exit/Enhancement to chnage the transaction type filed in FB01L transact

Hi,

My requirement is to change the transaction type (BSEG-ANBWA) at line item level in FB01L transaction.

Do we have any proper BTE for this, or we have to go for a enhancementS.

I tried with few BTE's but still no luck.

Please provide your inputs.

Regards,

Sasi