> ## Documentation Index
> Fetch the complete documentation index at: https://docs.slm.m1amdocs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# HOA Error Checking

It is possible for the `WebSession.finalize` call to be successful while the underlying SOAP API call was not.

Therefore, your code should check that both the `WebSession.finalize` call and the API return within it returned a 200 for success.

As different API calls will use the same return codes to mean different things, please reference API name, return code, and return strings to get a complete error view and reference lists for each method in the Subscribe API Guide.

**Parent topic:**[Working with HOA with Hosted Fields](../topics/Working_with_HOA_with_Ho)


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