Does anyone know what the purpose of seal Id numbers is?

Does anyone know what the purpose of seal Id numbers is? And, please no lame jokes like "so a seal can cash a check."

I'm talking about the numbered tags that they put on storage units that are pending sale. Why do they use them and is it a legal requirement?

I must say I have no Idea, with that over with.   I do like the one "so a seal can cash a check."

I'm talking about the numbered tags that they put on storage units that are pending sale. Why do they use them and is it a legal requirement?

If the seal isn't numbered then there is nothing stopping someone from breaking the seal, opening the unit, taking stuff, and then putting another seal back on. If it is a legal requirement then I would think it's a state by state law and not a federal one.

Does anyone know what the purpose of seal Id numbers is?

To tell them apart, they all look alike. 

If the seal isn't numbered then there is nothing stopping someone from breaking the seal, opening the unit, taking stuff, and then putting another seal back on. If it is a legal requirement then I would think it's a state by state law and not a federal one.

yep , in my area they only use them in places that cut your lock pre auction