How To Fix OL813 - Mandatory parameter '&' missing

OL813 - Overview

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 813

• Message text: Mandatory parameter '&' missing

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 OL813 - Mandatory parameter '&' missing ?

  The SAP error message OL813, which states "Mandatory parameter '&' missing," typically occurs when a required parameter is not provided in a transaction or function module call. This error can arise in various contexts, such as during the execution of reports, transactions, or when calling function modules in ABAP programs.
  
  Cause:
  
  Missing Parameter: The most common cause is that a mandatory parameter, which is required for the execution of a function or transaction, has not been supplied.
  Incorrect Configuration: Sometimes, the configuration settings for a particular transaction or function module may not be set up correctly, leading to missing parameters.
  User Input: If the error occurs during user input, it may be due to the user not filling in all required fields in a screen or selection criteria.
  Custom Development: In custom ABAP programs, if a developer forgets to pass a required parameter to a function module or method, this error can occur.
  
  
  Solution:
  
  Check Required Parameters: