How To Fix APO_BAPI355 - Obligatory parameter &1 was not transferred or was transferred blank

APO_BAPI355 - Overview

• Message type: E = Error

• Message class: APO_BAPI - Message Class for APO BAPIs

• Message number: 355

• Message text: Obligatory parameter &1 was not transferred or was transferred blank

Self-Explanatory Message

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APO_BAPI355 - Details

• The SAP error message APO_BAPI355 indicates that a required parameter (denoted as &1) was either not provided or was provided with a blank value when calling a BAPI (Business Application Programming Interface) in the SAP Advanced Planning and Optimization (APO) module. This error typically occurs when the BAPI is expecting certain mandatory fields to be filled in, and they are either missing or empty.
  
  Cause:
  
  Missing Mandatory Fields: The BAPI you are trying to call has mandatory fields that must be populated with valid data. If any of these fields are not included in the call, or if they are included but left blank, this error will occur.
  Incorrect Mapping: If you are using a custom program or interface to call the BAPI, there may be an issue with how the parameters are being mapped or passed to the BAPI.
  Data Validation: The data being passed may not meet the validation criteria set by