Message type: E = Error
Message class: PK - Production - KANBAN
Message number: 021
Message text: Please specify source data
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.
PK020 Control cycle &1 &2 &3 will be changed
Self-Explanatory Message Since SAP believes that this specific error message is ...
PK019 Please define reference completely
Self-Explanatory Message Since SAP believes that this specific error message is ...
PK022 No.of kanban containers not equal to cntrl cycle data; data is changed
What causes this issue? You have just deleted one or more kanban container(s). ...
PK023 A control cycle must contain at least 2 kanban containers
Self-Explanatory Message Since SAP believes that this specific error message is ...
SAP messages fall into 3 different categories: Error messages
(message type = E), Warnings (W) or Informational (I) messages.
An error message will prevent you from continuing your work - it is a hard stop and you need to fix the error before you can proceed. A warning message will stop your work, however, you can then bypass the warning by pressing the Enter key on your keyboard. That said, it is still good practice to investigate the cause of the warning message and address it. An information message will not stop your work and is truly just for informational purposes.
Click on this link to search all SAP messages.