An apparatus, system, and method are disclosed to signal a logical error in a function call made by an integration adapter. The apparatus includes an communication module, a code extraction module, a comparison module, and an error report module. The communication module receives a business object having an error dictionary in response to a function call. The code extraction module extracts an error code value from the business object based on an error code location identifier. The comparison module compares the error code value to an associated error code in the error code dictionary. The error report module signals a logical error in the function call.