NA-088 operation requires validation

Today I received e-mail from Bob K3EST informing that NA-088 operation requires validation:

Dear Jacek,

IOTA Management has become aware you activated an IOTA group (NA-088) that is defined in the IOTA Directory as DIFFICULT. Your activation was welcome news to IOTA chasers around the world. You may or may not know that there are specific requirements for activation of a DIFFICULT IOTA operation before it is accepted as valid.
........
IOTA management appreciated your effort to activate this interesting IOTA. We hope you had a safe return from NA-088.

Thank you and good IOTA hunting!

73,

Bob, K3EST
IOTA Validation Team

I feel that it makes my operation more important, hihi. Anyway I have already provided all required information and evidence and hope it will be approved soon.