How To Fix /SAPAPO/ATP209 - Conversion of units without dimensions is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 209

• Message text: Conversion of units without dimensions is not possible

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 /SAPAPO/ATP209 - Conversion of units without dimensions is not possible ?

  The SAP error message /SAPAPO/ATP209 indicates that there is an issue with the conversion of units in the Advanced Planning and Optimization (APO) module, specifically related to the Availability Check (ATP). This error typically arises when the system encounters a situation where it cannot convert between different units of measure because the units involved do not have dimensions or are not defined properly.
  Cause:
  
  
  Missing Unit of Measure (UoM) Definition: The units involved in the transaction may not be defined correctly in the system. For example, if you are trying to convert between two units that are not compatible or do not have a defined conversion factor.
  
  
  Incorrect Master Data: The material master data may have incorrect or incomplete unit of measure settings. This can include missing base units or incorrect conversion factors.
  
  
  Unit of Measure Group Issues: The unit of measure group assigned to the material may not be set up correctly, leading to issues during conversion.
  
  
  Data Inconsistencies: There may be inconsistencies in the data related to the material, such as discrepancies between the planned and actual units of measure.
  
  
  Solution:
  
  
  Check Unit of Measure Definitions:
  
  Go to the transaction code CUNI (Maintain Units of Measure) and verify that the units of measure involved in the transaction are defined correctly.
  Ensure that there are valid conversion factors between the units.
  
  
  
  Review Material Master Data:
  
  Use transaction code MM03 to display the material master data and check the unit of measure settings.
  Ensure that the base unit of measure is correctly defined and that all necessary units of measure are included in the material master.
  
  
  
  Verify Unit of Measure Groups:
  
  Check the unit of measure group assigned to the material and ensure it is set up correctly. You can do this in the material master under the purchasing or sales views.
  
  
  
  Check for Data Inconsistencies:
  
  Run consistency checks on the material master data to identify any discrepancies that may be causing the issue.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional guidance.
  
  
  
  Testing:
  
  After making the necessary adjustments, perform a test transaction to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CUNI: Maintain Units of Measure
  MM03: Display Material Master
  MM02: Change Material Master
  MM01: Create Material Master
  
  
  
  Documentation: Refer to SAP Help documentation for detailed information on unit of measure handling in SAP APO.
  
  
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  
  By following these steps, you should be able to identify and resolve the cause of the /SAPAPO/ATP209 error message in your SAP system.