Input Service Distributor credit distribution: allocation by tax type, attribution to recipients, and pro rata turnover basis. Input Service Distributors must allocate input tax credit by issuing a prescribed document and may distribute credit only against such documents, not exceeding available credit. Credit attributable to a single recipient must go only to that recipient; credit attributable to multiple recipients must be divided pro rata among recipients to whom the service is attributable, based on each recipient's turnover in the State or Union territory during the relevant period. The relevant period is generally the prior financial year or, if turnover is absent, the most recent quarter with available turnover data. Recipient of credit is the supplier sharing the same Permanent Account Number as the distributor.