While testing the the IPA Volatility Surfaces API , we sometimes randomly get the error message:
"The underlying connection was closed: An unexpected error occurred on a send."
The documentation for the IPA Volatility Surfaces API ( https://developers.refinitiv.com/refinitiv-data-platform/refinitiv-data-platform-apis/docs?content=65116&type=documentation_item ) lists bunch of error messages but it does not list this.
Could you please give more details on this error message?