How To Fix WT728 - Calculation of next planning period for time-phased planning requirements

WT728 - Overview

• Message type: E = Error

• Message class: WT - Retail: Replenishment

• Message number: 728

• Message text: Calculation of next planning period for time-phased planning requirements

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WT728 - Calculation of next planning period for time-phased planning requirements ?

  SAP Error Message:
  WT728 - Calculation of next planning period for time-phased planning requirements
  
  
  Cause:
  The error WT728 occurs during the calculation of the next planning period for time-phased planning requirements in SAP. This typically happens when the system is unable to determine the next valid planning period based on the current settings in the material master or the planning parameters.
  Common causes include:
  
  Incorrect or missing settings in the Planning Calendar or Factory Calendar.
  The Planning Horizon or Planning Period settings are not properly maintained.
  The system cannot find a valid next period because the current period is at the end of the planning horizon.
  Incorrect or inconsistent configuration in the Material Master (MRP views), such as the MRP type, lot size, or planning time fence.
  Issues with the Time-Phased Planning settings, such as the period indicator or period length.
  
  
  
  Solution:
  To resolve the WT728 error, follow these steps:
  
  
  Check Planning Calendar and Factory Calendar:
  
  Verify that the planning calendar assigned to