How To Fix C1809 - Required characteristic '&' was excluded

C1809 - Overview

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 809

• Message text: Required characteristic '&' was excluded

What causes this issue?

A characteristic with the <LS>Entry required</> indicator was hidden,
because, for example, a precondition is not fulfilled. This means that
no value can be assigned to the characteristic. However, the
configuration process is not complete until all required
characteristics have value assigned to them.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If you want to save the configuration anyway, set the status of the
configuration to <ZH>locked</> or <ZH>incomplete</>.
Before you can change the configuration status to <ZH>released</>, you
must delete the <LS>Entry required</> indicator. You can then use a
selection condition to define that the characteristic must have a value
assigned to it if a precondition is fulfilled.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C1809 - Required characteristic '&' was excluded ?

  The SAP error message C1809, which states "Required characteristic '&' was excluded," typically occurs in the context of SAP's Advanced Planning and Optimization (APO) or similar modules where characteristics are used to define the properties of products or materials.
  
  Cause:
  This error usually arises when a required characteristic (denoted by '&') is not included in the planning or selection process. This can happen due to several reasons:
  
  Missing Characteristics: The characteristic that is required for the planning process is not assigned to the relevant master data (e.g., material master, info object).
  Incorrect Configuration: The configuration settings in the planning area or planning book may not include the required characteristic.
  Data Inconsistency: There may be inconsistencies in the data that prevent the characteristic from being recognized or included.
  User Authorization: The user may not have the necessary authorizations to access or modify the required characteristic.
  
  
  Solution:
  To resolve the C1809 error, you can take the following steps:
  
  
  Check Master Data:
  
  Ensure