If any of your properties are discovered by City officials to be unregistered, you can receive an administrative citation for failure to register; this penalty can cost $100 or more per property.

Make 80% of all your failures on paper first.

Upon further review, SDHC has determined that your application remains ineligible for the following reason(s): Failure to return required forms and documents to determine eligibility   Inaccurate information/Documentation insufficient to determine eligibility  This is the Final Determination that your application for the City of San Diego COVID-19 Housing Stability Assistance Program is not eligible for assistance.

There will always be a level of fear of failure and you will most likely experience some, mitigating that with diligence will keep you in a healthy state of paranoia.

Water penetration can also include roof failures or pipe bursts that allow water to leak into or damage your home.Either have the repaired area researched by your local expert and accept it.

Although management has always been the key to success or failure. 

Failure to pay rent would be. 

Just because the costs might be in the furture does not warrant not budgeting for those known expensesThen there is the misc costs of asset protection, bookkeeping, unexpected utilities (such as between tenants (tenant turn over) or failure not attributable to the tenant such as slab leak).  

Maybe even failure to take full advantage of an opportunity, resulting in a loss of potential profit or benefit.

FDCPA controls debt collection and makes sure that buyers  of defaulted debt don't threaten borrowers with violence , phone calls in the middle of the night and non-existent jail sentences for failure to repay.