Question 400
At Brookside Manufacturing, the plant software team is implementing a work-order system upgrade under requirements for planned downtime and production traceability. The team says the following incident was fixed: A custom API plug-in has been compiled but the operation cannot be invoked because no matching message registration exists. Which result BEST proves the intended fix is effective?
Explanation
Correct Answer
A documented request invokes the registered handler once and yields the expected response properties. This directly tests whether the reported failure has been corrected: A custom API plug-in has been compiled but the operation cannot be invoked because no matching message registration exists. The intended action was Register the custom API message and align the handler's input and output parameter definitions with its plug-in step. The observed Brookside Manufacturing outcome is stronger evidence than a completed ticket or a saved configuration alone.
Incorrect Answers
The production step resolves the intended type and runs with its required images after import. Such evidence would validate a different change: A solution deployment changes a plug-in assembly version but leaves its prior step bound to an obsolete type. It follows the separate remedy Inspect and update Plug-in Registration Tool assemblies, types, steps and images through the solution lifecycle. The Brookside Manufacturing scenario instead reports A custom API plug-in has been compiled but the operation cannot be invoked because no matching message registration exists. The decisive observation must be: A documented request invokes the registered handler once and yields the expected response properties.
Authorized callers receive the calculated response and low-privilege callers are denied execution. Such evidence would validate a different change: An organization exposes a financial calculation through a Dataverse custom API but lets any authenticated user invoke it. It follows the separate remedy Configure custom API execute privilege or appropriate authorization checks and register the server-side handler. The Brookside Manufacturing scenario instead reports A custom API plug-in has been compiled but the operation cannot be invoked because no matching message registration exists. The decisive observation must be: A documented request invokes the registered handler once and yields the expected response properties.
The comparison uses the actual previous credit limit even when the request contains only the changed field. Such evidence would validate a different change: A plug-in needs the old credit limit to compare it with the new value but Target contains only attributes sent by the caller. It follows the separate remedy Register a Pre Image with the required previous fields and read it from execution context. The Brookside Manufacturing scenario instead reports A custom API plug-in has been compiled but the operation cannot be invoked because no matching message registration exists. The decisive observation must be: A documented request invokes the registered handler once and yields the expected response properties.