Tax deduction

SIR, contract between two parties one govt(1st party) and other non-govt.(2nd party) to provide services.. 2nd party produced bills. 1st party asked pan no. for the tds deduction. 2nd party provided its proprietor's pan no.(individual) and one cert of CA that Pan no. of prop. and 2nd party is same. on search, it came to knowledge that 2nd party obtained a TAN no. under category - FIRM/AOP/BOI/....... But did not provided PAN NO. of firm/boi/aop/..... should i ask for PAN NO. OF FIRM/AOP/..... OR should i deduct tax @ 2% in case other than individual/huf or @ 1%. 2. status in TAN NO.- firm/aop/boi. Can 2nd party use PAN NO. of individual for tax deduction. 3. certificate o CA is legally valid in this matter specially the said CA is writing himself as PARTNER. in his letter pad