How To Fix C1218 - Choose a date before &2. Characteristic &1, class &3/&4

SAP Error Message - Details

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 218

• Message text: Choose a date before &2. Characteristic &1, class &3/&4

What causes this issue?

You tried to move the "Valid From" date of the change master record into
the future (compared to the current "Valid From" date of the change
master record).
This is not possible, because consistency cannot be ensured for the
characteristic &V1&.
This is because this would lead to a time gap in the validity of parts
of the definition of the characteristic &V1& if you made this change.
If class type and class are specified below, this message refers to an
overwrite of the characteristic &V1& there:
Class type &V3&, class &V4&.

System Response

The system generates a message log listing the change objects that do
not allow a date change.

How to fix this error?

Choose a "Valid From" date before &V2& for the change master record.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C1218 - Choose a date before &2. Characteristic &1, class &3/&4 ?

  The SAP error message C1218 indicates that there is an issue with the date selection in the context of characteristics and classes in the classification system. Specifically, the error message states: "Choose a date before &2. Characteristic &1, class &3/&4." This means that the date you have selected is not valid because it is after a specified date (&2) for the characteristic (&1) in the class (&3/&4).
  Cause:
  
  Date Constraint: The characteristic you are trying to assign or modify has a date constraint that requires the date to be earlier than a specified date.
  Configuration Error: There may be a configuration issue in the classification system where the date limits for the characteristic are not set correctly.
  Data Entry Error: The user may have mistakenly entered a date that is later than the allowed date.
  
  Solution:
  
  Check the Date: Review the date you have entered and ensure it is before the specified date (&2) mentioned in the error message.
  Review Characteristic Settings: Go to the classification settings for the characteristic (&1) and check the validity dates. Ensure that the date you are trying to use falls within the allowed range.
  Adjust the Date: If the date you need to use is indeed valid, you may need to adjust the configuration of the characteristic to allow for the desired date.
  Consult Documentation: Refer to the SAP documentation or help resources for more information on the specific characteristic and its constraints.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CL02 (Change Class) or CL03 (Display Class) to review and modify class characteristics.
  Classification System: Familiarize yourself with the classification system in SAP, including how characteristics and classes are defined and managed.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance related to this error message.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.