team organization issues

one problem that i noticed within our team was that if a lead or even editor makes changes to documents (content) they don't tell any one else which has an effect on various aspects of the document. In our PDR the the lead over editing stated in the science part that taking data once every 30 minutes was our plan (also stated in our science and technical requirements);however in the principle of operation it clearly states that data will be collected once every 10 seconds. As programmer in my data storage diagram i have our stware to record data every 10 seconds, this was not conveid to me so i only was going off of what i was told and what was i the requirements. which brings me back to my original statement, team communication is very important to successful team performance