Inner Join Problem

Hi everyone,

I'm making an Inner Join. As an example Solution tablom there is a Solution Category tablom that is bound to it. The following query returns 2 records when the result is 1 record. What is the reason of this.

  select TS.CozumAd from T_SolutionSubCategory TS INNER JOIN 
  T_Solution TL on TS.SolID = TL.ID