How To Fix C2021 - Item &1 material &2 not checked (see long text)

C2021 - Overview

• Message type: E = Error

• Message class: C2 - Other messages production orders

• Message number: 021

• Message text: Item &1 material &2 not checked (see long text)

What causes this issue?

A material component is not included in an availability check, if
its committed quantity was changed manually in
<GL:backorder_processing>backorder processing</> and
the availability check refers to <ZH>all</> material components in the
order.

How to fix this error?

To check the availability of a component whose committed quantity was
changed manually, proceed as follows:
Branch to the component overview screen.
Select the desired component.
Check the availability of the <ZH>single</> component by selecting the
menu options <ZH>Component -> Check availability</>.

Error message extract from SAP system. Copyright SAP SE.

C2021 - Details

• The SAP error message C2021 indicates that a specific item in a document (like a purchase order or sales order) has not been checked for certain conditions or validations. The message typically includes placeholders for the item number (&1) and the material number (&2) that are causing the issue.
  
  Cause:
  The error can occur due to several reasons, including:
  
  Missing Material Master Data: The material may not have been set up correctly in the material master, or it may be missing required data.
  
  Configuration Issues: There may be configuration settings in the system that prevent the material from being checked properly.
  Document Type Settings: The document type being used may not be configured to perform the necessary checks for the item.
  User Authorizations: The user may not have the necessary authorizations to perform the checks on the material.
  
  
  Solution:
  To resolve the C2021 error, you can take the following steps:
  
  
  Check Material Master Data:
  
  Go to the material master record