<Ul> <Li> Registered Landman (RL)--The initial level of certification, RL certification signifies a fundamental knowledge of the land industry as well as a landman's commitment to furthering their education . This certification level requires the applicant to be sponsored by one RPL and complete a "take home" test with a passing grade, in addition to various experiential requirements and a fee . </Li> <Li> Registered Professional Landman (RPL)--The mid-level designation offered by AAPL, RPL certification distinguishes a landman as knowledgeable, experienced and professional . This certification level requires the applicant to be sponsored by three CPL certified individuals and complete a comprehensive proctored test, in addition to various experiential requirements and a fee . </Li> <Li> Certified Professional Landman (CPL)--The highest designation offered in the energy management industry, CPL certification is the standard by which landmen demonstrate their comprehensive competence, proficiency and professionalism in the landman field . This certification level requires the applicant to be sponsored by three CPL certified individuals and complete a comprehensive proctored test, in addition to various experiential requirements and a fee . </Li> </Ul> <Li> Registered Landman (RL)--The initial level of certification, RL certification signifies a fundamental knowledge of the land industry as well as a landman's commitment to furthering their education . This certification level requires the applicant to be sponsored by one RPL and complete a "take home" test with a passing grade, in addition to various experiential requirements and a fee . </Li> <Li> Registered Professional Landman (RPL)--The mid-level designation offered by AAPL, RPL certification distinguishes a landman as knowledgeable, experienced and professional . This certification level requires the applicant to be sponsored by three CPL certified individuals and complete a comprehensive proctored test, in addition to various experiential requirements and a fee . </Li> <Li> Certified Professional Landman (CPL)--The highest designation offered in the energy management industry, CPL certification is the standard by which landmen demonstrate their comprehensive competence, proficiency and professionalism in the landman field . This certification level requires the applicant to be sponsored by three CPL certified individuals and complete a comprehensive proctored test, in addition to various experiential requirements and a fee . </Li>

What does rpl stand for in oil and gas