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There can be several problems that can arise while retrieving information from a SOAP API in OpenEdge, including:

1. Complex data structures: In a SOAP API, the data is often structured in a complex manner, which can make it difficult to parse and work with in OpenEdge.

2. Authentication and Authorization: Some SOAP APIs require authentication and authorization to access their data. It can be challenging to implement these requirements properly in OpenEdge.

3. Performance: SOAP APIs can be slow and inefficient, particularly when transferring large amounts of data. This can impact the performance of OpenEdge applications.

4. Version compatibility: SOAP APIs may have different versions with varying levels of compatibility. OpenEdge may not be able to work with some older or incompatible versions of the API.

5. Error handling: SOAP APIs can generate several different types of errors, including communication errors, authentication errors, and syntax errors. Proper error handling is critical to avoid application crashes and ensure data consistency.