How To Fix STEP656 - Effectivity &1 ignored due to missing start date (time interv.based eff.)

STEP656 - Overview

• Message type: E = Error

• Message class: STEP - ISO 10303 STEP Mapping Messages

• Message number: 656

• Message text: Effectivity &1 ignored due to missing start date (time interv.based eff.)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message STEP656 - Effectivity &1 ignored due to missing start date (time interv.based eff.) ?

  The SAP error message "STEP656 Effectivity &1 ignored due to missing start date (time interv.based eff.)" typically occurs in the context of time-based effectivity in SAP, particularly when dealing with master data such as materials, BOMs (Bill of Materials), or routing.
  
  Cause:
  This error indicates that there is a missing start date for the effectivity period of a specific object (denoted by &1). In SAP, time-based effectivity allows you to specify when a particular version of a material or BOM is valid. If the start date is not defined, the system cannot determine when the effectivity should begin, leading to this error.
  
  Solution:
  To resolve this error, you should:
  
  
  Check the Object: Identify the object (e.g., material, BOM, routing) associated with the error message. The placeholder &1 will typically be replaced with the relevant identifier.
  
  
  Review Effectivity Dates:
  
  Go to the relevant transaction (e.g., MM02 for material master, CS02 for BOM, or CA02 for routing).
  Check the effectivity