ASSIGN with length 0 in program "SAPLRSSM".

Hi all.

I have a little problem, in a BW process chain, I have a infopackage, the infopackage is configured to load data from a database, but frequently this load fail, the event log says "Program error: ASSIGN with length 0 in program "SAPLRSSM". This happened because the infopackage lose parameters.

When I view the process chain monitor and the log details, the infopackage instance don´t have all parameters for execute the job.

Any Ideas?.

Thanks.