How To Fix /SAPAPO/SDP136 - You are not permitted to enter negative values

/SAPAPO/SDP136 - Overview

• Message type: E = Error

• Message class: /SAPAPO/SDP -

• Message number: 136

• Message text: You are not permitted to enter negative values

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/SDP136 - Details

• The SAP error message /SAPAPO/SDP136: You are not permitted to enter negative values typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly when dealing with planning data such as demand planning or supply planning. This error indicates that the system has detected an attempt to enter a negative value in a field where only non-negative values are allowed.
  
  Cause:
  
  Negative Input: The most straightforward cause is that the user is trying to enter a negative quantity in a field that does not accept negative values (e.g., demand, supply, or inventory levels).
  Data Entry Error: It could be a simple mistake during data entry where the user accidentally inputs a negative number.
  Configuration Settings: The system may be configured to disallow negative values for certain planning parameters, which can be a business rule or a system setting.
  Master Data Issues: There may be issues with the master data that lead to negative