<prompt> Translate the following text to EnglishUchunguzi wa ndani wa Centrelink ulionyesha kuwa hadi asilimia 30 ya kazi zote zilikuwa za kufanya kazi tena kwa sababu hazikufanywa kwa usahihi mara ya kwanza.  <response>: Centrelinks own internal review showed that up to 30 percent of all work was rework because it was not done correctly the first time. 