How To Fix SDDIC_DDLA_ANNOCHECK021 - Boolean annotation value must be lowercase

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDIC_DDLA_ANNOCHECK - Messages for annotation usage check

• Message number: 021

• Message text: Boolean annotation value must be lowercase

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDDIC_DDLA_ANNOCHECK021 - Boolean annotation value must be lowercase ?

  The SAP error message SDDIC_DDLA_ANNOCHECK021 indicates that there is an issue with the format of a Boolean annotation value in your data model or service definition. Specifically, the error states that the Boolean annotation value must be in lowercase. This is a common requirement in many programming and data definition contexts, where Boolean values are expected to be represented as true or false rather than True or False.
  Cause:
  The error is typically caused by one of the following:
  
  Incorrect Case: The Boolean value is defined or used with an uppercase letter (e.g., True or False).
  Data Model Definition: The data model or service definition may have annotations that are not adhering to the expected lowercase format for Boolean values.
  Code Generation: If the code is generated from a model, the generation process may have introduced the incorrect casing.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Annotations: Review the annotations in your data model or service definition. Ensure that all Boolean values are specified in lowercase (true or false).
  
  
  Update Code: If you are working with code, search for any instances of Boolean values and change them to lowercase. For example, replace True with true and False with false.
  
  
  Regenerate Artifacts: If the error arises from generated code or artifacts, regenerate them after correcting the annotations in the model.
  
  
  Validation: After making the changes, validate your model or service definition to ensure that there are no further issues.
  
  
  Testing: Test the application or service to confirm that the error has been resolved and that the functionality is working as expected.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for guidelines on data modeling and annotations, which may provide additional context on the correct usage of Boolean values.
  Community Forums: Check SAP community forums or support channels for similar issues and solutions shared by other users.
  Version Compatibility: Ensure that you are using a compatible version of SAP that adheres to the same annotation standards, as different versions may have variations in requirements.
  
  By following these steps, you should be able to resolve the SDDIC_DDLA_ANNOCHECK021 error and ensure that your Boolean annotations are correctly formatted.