Data conversion issue

Hi Experts,

  Can any one please help me out from the below issue:

(14.2) 05-29-15 07:48:55 (E) (25705:555833664) RUN-050802: |Data flow DF_TEST_CONV|Transform Query_1-Join10

                                                           Cannot convert data <> into type <DECIMAL>. Context: Column <>.

(14.2) 05-29-15 07:49:09 (E) (25697:1395656400) RUN-050802: |Data flow DF_TEST_CONV|Transform Query_1-Join10

                                                            Cannot convert data <> into type <DECIMAL>. Context: Column <>.