How To Fix /SAPAPO/SDP145 - Select only cells ready for input in order to insert data

/SAPAPO/SDP145 - Overview

• Message type: E = Error

• Message class: /SAPAPO/SDP -

• Message number: 145

• Message text: Select only cells ready for input in order to insert data

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.

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/SAPAPO/SDP145 - Details

• The SAP error message /SAPAPO/SDP145 indicates that you are trying to input data into cells that are not ready for input in the SAP Advanced Planning and Optimization (APO) system, specifically in the context of the Supply Network Planning (SNP) or Demand Planning (DP) modules. This error typically occurs when you attempt to enter data in a planning book or data view where certain cells are either locked, not editable, or not configured for input.
  Causes:
  
  Cell Locking: The cells you are trying to edit may be locked due to various reasons, such as being part of a locked planning version or due to user restrictions.
  Non-Editable Cells: The cells may be configured as non-editable in the planning book settings. This can happen if the planning book is set up to only allow certain cells to be edited.
  Data View Configuration: The data view you are using may not be set up to allow