How To Fix RSWADMDERR1391 - Enter at least one child parameter below mandatory '&2' (ancestor: &1).

SAP Error Message - Details

• Message type: E = Error

• Message class: RSWADMDERR1 - Web Application Designer 4.0 Error Messages

• Message number: 391

• Message text: Enter at least one child parameter below mandatory '&2' (ancestor: &1).

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSWADMDERR1391 - Enter at least one child parameter below mandatory '&2' (ancestor: &1). ?

  The SAP error message RSWADMDERR1391 indicates that there is a problem with the parameters being passed in a certain transaction or report. Specifically, it suggests that you need to enter at least one child parameter for a mandatory ancestor parameter.
  Cause:
  This error typically occurs in the context of using the SAP system where hierarchical parameters are involved. The "ancestor" parameter (indicated as &1) is a higher-level parameter that requires at least one "child" parameter (indicated as &2) to be specified. If you do not provide any child parameters when the ancestor parameter is mandatory, the system will throw this error.
  Solution:
  To resolve this error, follow these steps:
  
  
  Identify the Parameters: Check the parameters you are trying to enter in the transaction or report. Identify which one is the ancestor parameter and which ones are the child parameters.
  
  
  Enter Child Parameters: Ensure that you enter at least one child parameter that corresponds to the mandatory ancestor parameter. This may involve selecting or inputting values in the relevant fields.
  
  
  Review Documentation: If you are unsure about which parameters are required, refer to the documentation for the specific transaction or report you are using. This can provide insights into the relationships between parameters.
  
  
  Consult with Colleagues or Support: If you are still having trouble, consider reaching out to colleagues who may have experience with the specific transaction or report, or contact SAP support for assistance.
  
  
  Related Information:
  
  Parameter Hierarchy: Understanding the hierarchy of parameters in the specific context you are working with is crucial. Familiarize yourself with how parameters are structured in the report or transaction.
  SAP Notes: Check SAP Notes for any known issues or updates related to the error message. Sometimes, there may be patches or updates that address specific problems.
  Transaction Codes: If you are working with a specific transaction code, ensure that you are using it correctly and that you have the necessary authorizations to access the required parameters.
  
  By following these steps, you should be able to resolve the error and successfully execute the transaction or report in SAP.