How To Fix OD728 - Incremental lot size cannot be negative

SAP Error Message - Details

• Message type: E = Error

• Message class: OD - IS-Oil: TSW Traders' and Schedulers' Workbench messages

• Message number: 728

• Message text: Incremental lot size cannot be negative

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 OD728 - Incremental lot size cannot be negative ?

  The SAP error message OD728, which states "Incremental lot size cannot be negative," typically occurs in the context of production planning or material requirements planning (MRP) when dealing with lot sizing procedures. This error indicates that the system has encountered a negative value for the incremental lot size, which is not permissible.
  Cause:
  
  Configuration Issues: The lot size settings in the material master or the configuration for the relevant planning strategy may have been incorrectly set, leading to a negative value.
  Data Entry Errors: Manual entry of values in the material master or during planning may have resulted in a negative incremental lot size.
  Custom Code or User Exits: If there are custom developments or user exits that manipulate lot size calculations, they may inadvertently produce a negative value.
  Master Data Issues: Inconsistencies or errors in the master data related to the material or production process can lead to this error.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the lot size settings under the MRP view. Ensure that the incremental lot size is set to a valid, non-negative value.
  
  
  
  Review Lot Size Configuration:
  
  Check the configuration settings for lot sizing in the customizing (transaction code SPRO). Ensure that the settings for the relevant material type and planning strategy are correct.
  
  
  
  Validate Planning Parameters:
  
  Review the planning parameters in the MRP settings to ensure that they are correctly defined and do not allow for negative values.
  
  
  
  Check for Custom Code:
  
  If there are any custom developments or user exits that affect lot size calculations, review the code to ensure it does not produce negative values.
  
  
  
  Run MRP Again:
  
  After making the necessary corrections, run the MRP process again to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details on lot sizing procedures and configurations.
  
  
  
  Related Information:
  
  Lot Sizing Procedures: Understand the different lot sizing procedures available in SAP (e.g., static lot size, dynamic lot size, etc.) and how they impact planning.
  MRP Configuration: Familiarize yourself with MRP configuration settings in SAP, as they play a crucial role in how materials are planned and produced.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on resolving it.
  
  If the issue persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.