Input Service Distributor credit distribution: prescribed documentary allocation and pro rata turnover-based apportionment among recipients. Input Service Distributor must distribute State and integrated input tax credit by issuing prescribed documents; distributions cannot exceed available credit and must be made only to identified recipients. Credit attributable to one recipient goes only to that recipient. Where input services are attributable to multiple recipients, distribution is pro rata based on each recipient's turnover in the State or Union territory for the relevant period relative to the aggregate turnover of operational recipients. Relevant period is the prior financial year or, if absent, the last available quarter. Recipient of credit is defined by matching Permanent Account Number and turnover is taken subject to specified reductions.