Corr Key and Spool Id Link table

Dear Experts,

During correspondence generation, the dfkkcoh table is filled with correspondence type and other values except the spool id number. This spool id number is available in TSP01 table.

My report gets information from dfkkcoh table, but I am not able to pick the corresponding spool information from TSP01 table. Do anyone have a idea to establish link between these 2 tables?

Rgds,

Arun