RCBO adapters BS number

[BrownsElec]

Advise on the following please?

when using the clip in RCBO adapters (to convert MCBs) what should the BS number be recorded as on the cert?
My guess is 61009 but as I haven't actually got rid of the 60898 should it still be recorded as that?

cheers

 

[Sintra]

I've always put 61009 as you have converted the mcb to a rcbo.

 

[Plonker 3]

As Sintra said.

Although is there not a BS number attatched to the module telling you anyway?