Hello. Diagnostic 9168 is informational. Learn more here: What are informational diagnostics? 
Diagnostic 9168 says "Manually prepare a supplemental statement to be included with each partner's Pennsylvania Schedule RK-1 and/or NRK-1 for \"Nontaxable income or nondeductible expenses required to calculate member or partner basis\". The Pennsylvania K-1 Supplemental Information section in the Supplemental Info. (per partner) Screen, Screen 30, may be used to enter this information."