How To Fix /SAPAPO/ATPLOG_PAL090 - Characteristics combinations could not be (completely) locked

/SAPAPO/ATPLOG_PAL090 - Overview

• Message type: E = Error

• Message class: /SAPAPO/ATPLOG_PAL -

• Message number: 090

• Message text: Characteristics combinations could not be (completely) locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/ATPLOG_PAL090 - Characteristics combinations could not be (completely) locked ?

  The SAP error message /SAPAPO/ATPLOG_PAL090 indicates that there was an issue with locking characteristic combinations in the Advanced Planning and Optimization (APO) module, specifically in the context of Available-to-Promise (ATP) checks. This error typically arises when the system is unable to lock certain characteristic combinations that are necessary for processing ATP checks, which can lead to inconsistencies or conflicts in data handling.
  Causes:
  
  Concurrency Issues: Multiple processes or users may be trying to access or modify the same characteristic combinations simultaneously, leading to a locking conflict.
  Long-Running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, preventing other transactions from acquiring the necessary locks.
  
  Configuration Issues: Incorrect configuration of the APO system or the specific planning area may lead to locking problems.
  Database Locking: Database-level locks may be preventing the application from acquiring the necessary locks on the characteristic combinations.
  System Performance: High system load or performance issues can