 It was during the design phases that the project often became out of sync with customer requirements.During the SDM functional design phase called BD (Basic Design), design aspects were documented (out of phase) in detail for the later technical design DD (Detailed Design).This caused a gray zone of responsibility to occur between the two phases; the functional crew responsible for the data flows and process flows in the BD were making decisions that the technical crew later needed to code, although their technical knowledge was not detailed enough to make those decisions.