There was no documentation available, and the ERP lacked modern APIs. The few web services that were present were not sufficient to support the features required for the sales portal. To overcome this challenge, we had to delve deeper into the ERP's functionality, business logic, and data models to develop a strategy for building on top of the industry-specific ERP. Leveraging our extensive experience working with different ERPs, we carefully examined the technical details, data models, and interfaces, considered the requirements, and successfully unlocked this ERP to meet our client's needs.