How To Fix MW816 - &1 is not permitted as a packet size

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 816

• Message text: &1 is not permitted as a packet size

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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Smart SAP Assistant

• What is the cause and solution for SAP error message MW816 - &1 is not permitted as a packet size ?

  The SAP error message MW816 indicates that a specified packet size is not permitted. This error typically arises in the context of handling materials, especially when dealing with inventory management or logistics processes. The error message format usually looks like this: "MW816 &1 is not permitted as a packet size," where "&1" represents the specific packet size that is causing the issue.
  Cause:
  
  Invalid Packet Size: The packet size specified in the transaction or configuration is not valid according to the system's settings or business rules.
  Configuration Issues: The material master data may not be set up correctly, or the packet size may not be defined in the system.
  Data Entry Errors: Users may have entered an incorrect packet size during data entry, leading to this error.
  Custom Settings: Custom developments or enhancements in the SAP system may impose additional restrictions on packet sizes.
  
  Solution:
  
  Check Material Master Data: Verify the material master data for the item in question. Ensure that the packet size is defined correctly and is within acceptable limits.
  Review Configuration Settings: Check the configuration settings related to packaging and handling units in the SAP system. Ensure that the packet size is allowed as per the configuration.
  Correct Data Entry: If the error is due to incorrect data entry, correct the packet size in the relevant transaction or document.
  Consult Documentation: Refer to SAP documentation or help files for specific guidelines on valid packet sizes for the materials you are working with.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They can provide insights based on the specific configuration and version of your SAP system.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like MM02 (Change Material) or MM03 (Display Material) to check and modify material master data.
  Packaging Information: Review the packaging information in the material master, especially in the "Sales: General/Plant Data" and "Basic Data" views.
  User Exits and BAdIs: If there are custom developments, check for any user exits or Business Add-Ins (BAdIs) that might be enforcing specific rules on packet sizes.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address this specific error or provide additional context.
  
  By following these steps, you should be able to identify the cause of the MW816 error and implement the necessary solutions to resolve it.