pipe.binding_failed

A binding step could not bind its value


Type	`https://mthds.ai/errors/pipe.binding_failed`
Family	`pipe`: A pipe failing at run time because of what the method does.
Domain	`method`: the method's author acts, by changing the method
Retry	`no`: repeating the operation fails the same way
HTTP status	`422`
Raised as	a problem document, sent as the body of an HTTP response or kept in a run's record

What it means

At run time a bound value contradicts the structure its concept declares, so the binding step cannot walk its path. The problem names the segment and never what the runtime found there, which is the run's own data.

What to do

Check the step's from path against the value the earlier step produced, and correct the path or the concept.

Next steps

A problem carries the step aimed at whoever reads it: the first when its reader is the domain's actor, the method's author, and the second for any other reader.

Reader	Kind	Detail
The domain's actor	`change_method`	Correct the binding '`{binding}`' of pipe '`{pipe}`', or the structure it reads, then run the method again.
Any other reader	`contact_owner`	Ask the method's owner to fix the binding '`{binding}`' of pipe '`{pipe}`'.

Detail

The problem's detail is written from this template, filled with the occurrence's parameters:

The binding '{binding}' of pipe '{pipe}' could not follow '{segment}' in this run's value.

Parameters

Every parameter is present on every occurrence of the code.

Name	Type	Description
`pipe`	`identifier`	The controller holding the binding step.
`binding`	`identifier`	The name the step binds.
`segment`	`identifier`	The path segment the binding could not follow.