Excessive ERP customizations can significantly impact system performance: Increased Complexity: Customizations complicate the system, making it harder to maintain and troubleshoot. Performance Degradation: Additional custom code can slow down processes and lead to inefficiencies. Upgrade Challenges: Customizations may cause compatibility issues during system updates or patches. Higher Costs: Maintenance, testing, and debugging efforts increase with more customizations. Scalability Limitations: Over-customization can limit the system's ability to adapt to future business needs. To mitigate these impacts, prioritize essential customizations, focus on out-of-the-box functionality, and assess long-term implications.

ERP customization requests can have a significant impact on overall system performance, both positively and negatively. Increased Complexity: Customizations add layers of complexity to the ERP system. This can make it harder to maintain, upgrade, and troubleshoot, potentially leading to slower performance and increased downtime. Resource Consumption: Customizations often require additional resources, such as server capacity, database space, and IT personnel time. This can strain system resources and increase operational costs. Vendor Support Limitations: Extensive customizations may limit the level of support you can receive from the ERP vendor. This can make it more difficult to resolve issues and get timely assistance.

High numbers of customization requests may enhance system complexity, resource utilization, and dependency, thereby making it slower in performance and a possible bottleneck. Eventually, they may also bring the hassle of maintenance in the long run, compatibility with future updates, and scalability leading to a decrease in system reliability. Reduce such risks by creating high-value requests, using configurations over custom code, testing changes, and using modular extensions. Furthermore, make sure all customizations are scalable and have documentation for easy updating and debugging.

Being an ERP consultant one has to know well about the product capabilities, if you know well you can fit in with the existing functionalities with the minimum level of customizations.. I believe educating end users in a proper manner resolves these customization requests. And yes an ERP has to be a recognized one not like soo called ERPs but actually not more than enhanced MIS systems.