How To Fix V4121 - An invalid weekday was determined in processing IDOC &

V4121 - Overview

• Message type: E = Error

• Message class: V4 - Nachrichten Verkauf (Variable Meldungen und EDI-Meldungen)

• Message number: 121

• Message text: An invalid weekday was determined in processing IDOC &

What causes this issue?

You have designated a weekday in the
<DS:GLOS.Intermediate_Document>IDOC</> which cannot be processed.

System Response

The system terminates processing.

How to fix this error?

Correct the value in the IDOC or create the scheduling agreement
manually.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message V4121 - An invalid weekday was determined in processing IDOC & ?

  The SAP error message V4121, which states "An invalid weekday was determined in processing IDOC &," typically occurs during the processing of an IDoc (Intermediate Document) related to sales and distribution (SD) or other modules where date and time calculations are involved. This error indicates that the system has encountered a weekday value that is not valid, which can happen for various reasons.
  Causes:
  
  Invalid Date Format: The date provided in the IDoc may not be in the expected format, leading to an incorrect calculation of the weekday.
  Incorrect Data in IDoc: The IDoc may contain incorrect or unexpected data, such as a date that does not exist (e.g., February 30).
  System 
  Configuration Issues: There may be issues with the configuration of the calendar settings in the SAP system.
  Time Zone Issues: If the IDoc is being processed across different time zones, it may lead to discrepancies in date and time calculations.
  Custom Code or Enhancements: