How To Fix AM665 - Mask has the length 'zero'

AM665 - Overview

• Message type: E = Error

• Message class: AM - Business Address Services

• Message number: 665

• Message text: Mask has the length 'zero'

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 AM665 - Mask has the length 'zero' ?

  The SAP error message AM665, which states "Mask has the length 'zero'," typically occurs in the context of Asset Accounting (FI-AA) when there is an issue with the configuration of asset master records or when trying to perform certain operations related to asset management.
  
  Cause:
  
  Missing or Incorrect Configuration: The error often arises when the system expects a mask (a format or template for asset numbers or other identifiers) to be defined, but it is either missing or incorrectly configured.
  Data Entry Issues: If a user is trying to enter an asset number or identifier that does not conform to the expected format, or if the field is left blank, this error can occur.
  Custom Development: If there are custom programs or enhancements that manipulate asset data, they might not be handling the mask correctly.
  
  
  Solution:
  
  
  Check Configuration:
  
  Go to the Asset Accounting configuration settings in SPRO (SAP Reference IMG).
  Navigate to Financial Accounting (New) > Asset Accounting