# Create Project Offering.

Creates a new Project Offering for the specified Project. Additional configuration for certain Billing Models are optional.

Endpoint: POST /v1/projects/{project_id}/offerings
Version: v1
Security: ApiKey

## Path parameters:

  - `project_id` (string, required)
    The ID of the Project, to which this Project Offering belongs.

## Request fields (application/json-patch+json):

  - `name` (string, required)
    The name for the Project Offering.

  - `billing_model` (object, required)
    The Billing Model for the Project Offering.

  - `billing_model_options` (object,null)
    Additional Billing Model configuration for the Project Offering.

## Response 201 fields (application/json):

  - `id` (string, required)
    The unique identifier for the Project Offering.

  - `name` (string, required)
    The name of the Project Offering.

  - `billing_model` (object, required)
    The billing model applied to the Project Offering.  This is restricted by the Project's Project Type. Client projects support Time & Materials, Fixed Bid, and Fixed Retainer billing models while Internal projects only allow Investment and Admin models

  - `billing_model_options` (any, required)
    Additional Billing Model configuration for the Project Offering.

## Response 400 fields (application/json):

  - `type` (string)
    RFC reference for the error type

  - `title` (string)
    Human-readable summary of the error

  - `status` (integer)
    HTTP status code

  - `errors` (array)
    Detailed error messages for each validation failure

  - `trace_id` (string)
    Trace identifier for debugging