Payment Term?

Hello Friends,

We need the following payment terms to be created in TPW: 1% 120, Net 121.

I have created above new payment Terms As CU88, in Dev server & TR also released to Quality. I have send to Same TR move to Production to client.Testing is ok from the user.

I told client also move to production the TR ,he is telling,This request also contains other payment terms such as YK50. and it has the same settings as CU88.

YK50 also same setting. I never create this it's there from the begining it self YK50 payment term. I need know what is YK50 TR?

Regards,

Hari