Message type: E = Error
Message class: DDACT - Messages for Activating Dictionary Objects
Message number: 021
Message text: Field & may not be a key field
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.
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.
DDACT021
- Field & may not be a key field ?The SAP error message DDACT021 indicates that a field specified in a data dictionary object (like a table or structure) is not allowed to be a key field. This typically occurs when you are trying to define a field as a key field in a table or structure where it is not permitted due to certain constraints or rules in the data dictionary.
Cause: Field Type: The field you are trying to set as a key field may not be of a suitable type. For example, fields that are not of type character or numeric may not be allowed as key fields. Field Length: Key fields usually have specific length requirements. If the field length is not appropriate, it may trigger this error. Field Attributes: Certain attributes of the field, such as being a reference field or having a specific data element, may prevent it from being a key field. Existing Key Fields: If the
Get instant SAP help. Sign up for our Free Essentials Plan.
DDACT020
No data fields have been declared
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
DDACT019
The number of keys is greater than the maximum allowed number &
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
DDACT022
Field & must be last field and of type 'RAW'
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
DDACT023
The data is longer than the maximum data length &
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.