3. the problems and obstacles encountered in the operations. 3.1 group members opinions do not match. So take the time to make a decision. 3.2 the information search is ambiguous and does not complete.
3. Problems and obstacles encountered in the implementation 3.1. Group members were not matches. It takes time to make a 3.2. Information from the searched unclear and incomplete.
3. The problems found in the operation 3.1 group members, there was no match. Must take decisions 3.2 information from information retrieval is unclear and incomplete .