Modification Index 01 does not exist for article/material

Hello Experts,

We are facing a strange issue in the system.

When a Schedule agreement is created from an Outline agreement, for one of the material for which modification is maintained throws the below error.

We checked the details and they are visible in Material as well as the contract

This is also visible in the Outline Agreement

Can you please help in order to proceed further?

Thanks,

Yash