If this was an explicit DLL Query Function (CEEPQDF) request, the feedback code is returned to the caller.

If this was a C dllqueryfn() or dlsym() request and the _EDC_DLL_DIAG environment variable was not set to QUIET, the error message was sent to the Language Environment® message file. Other DLL diagnostic options, such as issuing ctrace(), signaling a condition, and turning off _EDC_DLL_DIAG diagnostics, were available through the _EDC_DLL_DIAG environment variable.

If this was an explicit C dlsym() request, this error could also be returned to the caller through a subsequent call to the C dlerror() function.

A CEEDLLF DLL failure control block was populated with further DLL error diagnostics.