1. underestimated the workload. <br>2. DMS system construction takes time about 2-3 months, while the internal test will be after the system construction, the internal test can not be completed as planned. "
1. Insufficient workload estimation.<br>2. The DMS system construction takes about 2-3 months, and the internal test needs to be completed after the system construction, so the internal test cannot be completed as planned. "