Public-private partnerships (PPPs) have a wide range of forms that vary depending on the participation and risk of the private party. The terms of a PPP are typically defined in a contract or agreement in order to outline the responsibilities of each party and clearly apportion the risk. The graph below shows the range of PPP agreements. In addition to the PPP contract, there will also be numerous contracts between the SPV and its suppliers and financiers. These include financing agreements between the SPV and its lenders, as well as shareholder agreements between equity investors (see how to finance PPPs to learn more about the structure of PPP contracts). The PPP contract can only enter into force when these other contractual agreements are in effect. The EPEC Guidelines Guide (EPEC 2011b, 23) lists the themes that should be addressed in a standard PPP contract – examples of standardized PPP contracts and contractual clauses contain other examples. The PPIAF Toolkit for PPP in Highways (WB 2009a) section on contracts describes the extent of contractual agreements that are generally required for different types of PPPs. The establishment of an cross-sector partnership can be problematic because of differences between the cultures of government, industry and non-profit organizations. Issues such as performance criteria, measurement of objectives, government regulation and funding methods can be interpreted differently, leading to fuzzy communication. Conflicts may also be related to territorialism or protectionism and a lack of commitment to work within the partnership.  A business model of business partnership would not be correct or appropriate for a P3.  In this section, the concept of a ppp contract is called a “diek document” that regulates the relationship between public and private parties with a PPP. In practice, the PPP contract may have more than one document. For example, a PPP for the design, construction, financing, maintenance and maintenance of a new power plant supplied in large quantities to a public transmission company may be regulated by an electricity purchase contract (AAE) between the transmission company and the PPP company, as well as by an implementation agreement between the relevant department and the PPP company. Any agreement can be made again… Another model under discussion is the Public-Private Partnership (PPCP), in which government and private welfare actors collaborate and eliminate the emphasis on profit by private actors. This model is more used in developing countries such as India. [Citation required] The PPP in Infrastructure Resource Center hosts a collection of current PPP contracts and examples of agreements for a number of types of contracts and sectors. The Indian government`s planning committee provides an overview of the types of concession agreements for P3s for a number of transportation-related projects. Pressure to change the standard public procurement model initially became concerned about the level of public debt, which increased rapidly during the 1970s and 1980s.