Classification Tab not visible - what could be the root cause

Hi gurus,

Material info (new & update) gets updated into ERP from legacy through batch jobs defined. we're facing an issue that only one particular does not contains the 'Classification' tab remaining all other does.

What could be the root cause for this issue ?

As there is no manual intervention in creating/updating Materials, its not a manual mistake.

Solution for this would be extending the material and adding the Class to it, But we need to identify whats the root cause for this behaviour.

Could you pleas show some light on it..

thanks in advance.

Regards

Rohnaesh