Requirements type VSEV does not exist

Hi experts,

In MPS scenario I am transferring PIR quantity from info structure table SXXX to MD63. But in MD63 if I try to display if the PIR's are transferred for the Product group/material, I get the error as Errors occurred while reading data, see the message log --> "Requirements type VSEV does not exist" and no PIR's are displayed in MD63. How fix this error and from where the Requirements type value- VSEV gets picked.

Thanks

Sakthi