Can Beijing Social Security Association be transferred to Tianjin to pay off?

Legal analysis: You don't have to pay it back. No one told you to pay it back after you paid it off. It doesn't matter.

Legal basis: Article 19 of the Social Insurance Law of People's Republic of China (PRC), if an individual is employed across the overall planning area, his basic old-age insurance relationship will be transferred accordingly, and the payment period will be calculated cumulatively. When an individual reaches the statutory retirement age, the basic pension is calculated in stages and distributed uniformly. Specific measures shall be formulated by the State Council.