How To Fix /SAPAPO/SDP250 - Dependent objects already chosen. Drilldown/drillup not possible

/SAPAPO/SDP250 - Overview

• Message type: E = Error

• Message class: /SAPAPO/SDP -

• Message number: 250

• Message text: Dependent objects already chosen. Drilldown/drillup not possible

Self-Explanatory Message

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/SAPAPO/SDP250 - Details

• The SAP error message /SAPAPO/SDP250: Dependent objects already chosen. Drilldown/drillup not possible typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly when working with the Supply Network Planning (SNP) or Demand Planning (DP) modules. This error indicates that the system is unable to perform a drill-down or drill-up operation because the dependent objects (such as products, locations, or other planning objects) have already been selected or are in a state that prevents further navigation.
  Causes:
  
  Selection of Dependent Objects: The error often arises when you attempt to drill down or up on a planning object that has already been selected in the current view or context.
  Data Locking: If the data is locked by another user or process, it may prevent you from performing the desired operation.
  Incorrect Hierarchy Level: Attempting to drill down/up at an inappropriate level of the hierarchy can trigger this error.
  System Configuration: There may be configuration