LSMW - Legacy asset migration

Hello all,

I've created a LSMW trough Standard batch/direct Input to upload legacy asset:

Object:0160

Method: 0001

Program:RAALTD01

My issue is that when I create the asset master data the field txt50 is appearing with the error Field ANLB-TXT50. does not exist in the screen SAPLAIST 0140.

It´s strange for me because i´m doing this on BALTD structure.

could you please help me?

Thanks in advance,