It is also important to note that TMMi is positioned as a complementary model to the CMMI. In many cases a given TMMi level needs specific support from process areas at its corresponding CMMI level or from lower CMMI levels. In exceptional cases there is even a relationship to higher CMMI levels. Process areas and practices that are elaborated within the CMMI are mostly not repeated within TMMi; they are only referenced. For example the process area configuration management, which is also applicable to test (work) products / testware, is not elaborated upon in detail within the TMMi; the practices from CMMI are referenced and implicitly re-used.