While interlibrary loan services are incredibly useful, there are some limitations:
Loan Duration: The borrowing period for materials obtained via ILL is usually shorter than regular checkouts, which can be a constraint for extensive research projects. Availability: Not all materials can be shared through ILL due to licensing restrictions or fragile conditions of the materials. Processing Time: Although ILL aims for efficiency, there can be delays, especially if the material is not readily available or if it's being borrowed from a distant location.