input.missing

A required input is missing


Type	`https://mthds.ai/errors/input.missing`
Family	`input`: A run's inputs.
Domain	`input`: the caller acts, by changing the request or its inputs
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

The request omits an input that the selected pipe requires.

What to do

Give every input the selected pipe declares as required. A runner that reports input_form on /validate lists them, with the concept each one takes.

Next steps

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

Reader	Kind	Detail
The domain's actor	`change_input`	Add the input '`{input}`' to the request, then send it again.
Any other reader	`change_input`	Pass this to the caller, who must add the input '`{input}`' to the request.

Detail

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

The request does not give the input '{input}', which the method requires.

Parameters

Every parameter is present on every occurrence of the code.

Name	Type	Description
`input`	`identifier`	The input the method requires and the request omits.