How To Fix CM_SDM_API020 - Enter a minimum lot size ratio

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_SDM_API - Messages of HANA DB 2 ABAP mapping service

• Message number: 020

• Message text: Enter a minimum lot size ratio

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 CM_SDM_API020 - Enter a minimum lot size ratio ?

  The SAP error message CM_SDM_API020, which states "Enter a minimum lot size ratio," typically occurs in the context of SAP's Supply Chain Management (SCM) or Advanced Planning and Optimization (APO) modules. This error is related to the configuration of lot size settings for materials or products in the system.
  Cause:
  The error is triggered when a user attempts to create or modify a planning object (like a production order, purchase order, or stock transfer) without specifying a minimum lot size ratio. This ratio is essential for determining how much of a product should be produced or ordered based on demand and inventory levels. The absence of this information can lead to planning inconsistencies or inefficiencies.
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Material Master Data:
  
  Go to the Material Master (transaction code MM03) and check the relevant material's lot size settings.
  Ensure that the minimum lot size ratio is defined in the appropriate views (e.g., MRP view).
  
  
  
  Define Lot Size in MRP Settings:
  
  If the minimum lot size ratio is not set, you can define it in the MRP settings of the material master.
  Navigate to the MRP view and enter the minimum lot size ratio in the relevant field.
  
  
  
  Review Planning Parameters:
  
  Check the planning parameters in the relevant planning books or data views to ensure that the minimum lot size ratio is correctly configured.
  
  
  
  Consult Configuration Settings:
  
  If you have access to the configuration settings, you may need to review the settings in the SPRO transaction under the relevant sections for material requirements planning (MRP) or production planning.
  
  
  
  User Authorization:
  
  Ensure that you have the necessary authorizations to make changes to the material master or planning settings.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files for detailed guidance on setting up lot sizes and understanding their implications in planning.
  
  
  
  Related Information:
  
  Lot Size Types: Understand the different types of lot sizes (e.g., fixed lot size, lot-for-lot, economic order quantity) and how they affect planning.
  MRP Run: After making changes, you may need to run the MRP process again to see the effects of the new settings.
  Training and Support: If you are unsure about making these changes, consider reaching out to your SAP support team or a consultant for assistance.
  
  By following these steps, you should be able to resolve the CM_SDM_API020 error and ensure that your planning processes run smoothly.