Hi Rgi,
From you message, the data of 0MATERIAL contains special characters or spaces.
In the screen shot, 'Conveyance Allowan' contains the Space.
Please remove the space and load and then check.
Also, Please check that your 0MATERIAL infoobject is checked for lowercase or not.
If it is not selected, then small letters are not allowed to load.
Thanks,
Jai Ganesh J