How To Fix W8001 - & is not a valid & & input value

W8001 - Overview

• Message type: E = Error

• Message class: W8 - Workflow: Expressions, data flow

• Message number: 001

• Message text: & is not a valid & & input value

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 W8001 - & is not a valid & & input value ?

  The SAP error message W8001 with the text pattern:
  & is not a valid & & input value
  typically indicates that a value entered in a field is not valid according to the expected data type, domain, or allowed values defined in the SAP system.
  
  Cause
  
  The user has entered a value in a field that does not conform to the expected format or allowed values.
  The field might have a domain or data element with a fixed set of allowed values (value range), and the input does not match any of these.
  The input might violate data type restrictions (e.g., entering alphabetic characters in a numeric field).
  The input might be outside the allowed length or character set.
  Sometimes, this error can occur if the input value is not consistent with the underlying business logic or validation rules.
  
  
  Explanation of the Message Components
  The message text uses placeholders (&) which are replaced at runtime with specific information. For example:
  <value>