How To Fix MM308 - Previous period and last period of previous year have different values

MM308 - Overview

• Message type: E = Error

• Message class: MM - Messages for material master maintenance and Customizing

• Message number: 308

• Message text: Previous period and last period of previous year have different values

What causes this issue?

You have maintained different accounting data for the previous period
and for the last period of the previous year. However, these periods
are identical since the current period is period 01 of the current
fiscal year.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check your entries and correct them.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MM308 - Previous period and last period of previous year have different values ?

  The SAP error message MM308, which states "Previous period and last period of previous year have different values," typically occurs in the context of inventory management and material valuation. This error indicates that there is a discrepancy between the inventory values for the previous period and the last period of the previous year. This can happen due to various reasons, such as incorrect postings, adjustments, or changes in valuation methods.
  Causes:
  
  Incorrect Inventory Postings: If there were manual adjustments or incorrect postings made in the inventory, it could lead to discrepancies.
  Changes in Valuation Methods: If the valuation method for materials was changed, it could affect how values are calculated and reported.
  Data Migration Issues: If data was migrated from another system or during an upgrade, inconsistencies may arise.
  Unposted Documents: There may be unposted documents that affect the inventory values for the periods in question.
  Period Closing Issues: If the previous periods were not closed