Icse — TC attestation

Address:

BSF Tekanpur

Sir i serving in BSF, recently transferred from tripura to MP my wards studing in class 10th Registration Already done now I get TC from ICSE school and submit st Peter ICSE school in the month of June but now st Peter informed me to Attested tc from counsel
Request intimate

Tc attestation required if same board
If required who are attestation authority
Who are responsible for attested school or me
Why tc attestation required in same board