How To Fix AD01801 - Index must lie within customer name space (Y, Z)

AD01801 - Overview

• Message type: E = Error

• Message class: AD01 - DI Processor (Expense-related Billing)

• Message number: 801

• Message text: Index must lie within customer name space (Y, Z)

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 AD01801 - Index must lie within customer name space (Y, Z) ?

  The SAP error message AD01801 indicates that an index must lie within the customer name space, which typically refers to the naming conventions and restrictions in SAP for custom objects. In SAP, certain namespaces are reserved for SAP standard objects, while others (like Y and Z) are designated for customer-specific developments.
  
  Cause:
  The error occurs when you attempt to create or access an index that does not conform to the naming conventions set by SAP. Specifically, it means that the index name you are trying to use does not start with 'Y' or 'Z', which are the prefixes reserved for customer-specific objects. This is a safeguard to prevent conflicts between standard SAP objects and custom developments.
  
  Solution:
  To resolve this error, you should:
  
  
  Check the Index Name: Ensure that the index you are trying to create or access starts with 'Y' or 'Z'. If it does not, you will need to rename it accordingly.
  
  
  Modify the