batch input

hi,

I have Z Batch input program to change the height and width and Unit of measure , when i try to run this program to update the existing one it is not updating the values in the filed for a particular material, and it give an error saying that No batch input data found for screen SAPLMGMM3005 Leave to transaction SAPLSP01 in not allowed in batch input , any idea how can debug this probelm or how can i proceed further to find why it is not updating.

can some one pl. give an idea.