National BBM color Code Policy? I rcv'd a plastic card in my mail and I can not locate anything on the Net?

BBM Scheduled for Thursday Delivery For us on Bulk Business Main in conjunction with the National BBM Color Code Policy Please consult hte most recent BBM Color Code Instrucitons for Specific Procedures Regarding The Proper Use of this Tag. This Tag Is Intended for Reuse O1250D I am unable to find... show more BBM
Scheduled for
Thursday Delivery

For us on Bulk Business Main in conjunction with the National BBM Color Code Policy

Please consult hte most recent BBM Color Code Instrucitons for Specific Procedures Regarding The Proper Use of this Tag.

This Tag Is Intended for Reuse

O1250D

I am unable to find anything on the Net about this and the USPS website has nothing....

What is this for?