How To Fix MQ644 - Chart/depr. &1 inv.support key &2 does not have a unique currency key

MQ644 - Overview

• Message type: E = Error

• Message class: MQ - Messages for Euro Changeover Package

• Message number: 644

• Message text: Chart/depr. &1 inv.support key &2 does not have a unique currency key

What causes this issue?

Investment support key &V2& in chart of depreciation &V1& is assigned
to assets in different company codes which do not have the same
currency.
It is also possible that absolutely no company codes have been assigned
to chart of depreciation &V1& so that the system could not determine
any currency.

System Response

The maximum amount of the investment support key cannot be converted
automatically.

How to fix this error?

Maintain the amount manually after conversion. Note that the same
amount was previously used in different currencies. Check this again.
Check the investment support key in Asset Accounting Customizing using
transaction <DS:TRAN.OAI2>Check assistance measures</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MQ644 - Chart/depr. &1 inv.support key &2 does not have a unique currency key ?

  The SAP error message MQ644 indicates that there is an issue with the configuration of the chart of depreciation (CoD) and the associated currency keys in the system. Specifically, it means that the combination of the chart of depreciation and the depreciation area does not have a unique currency key assigned to it. This can lead to inconsistencies in financial reporting and asset accounting.
  
  Cause:
  
  Duplicate Currency Keys: The chart of depreciation and the depreciation area may have multiple currency keys assigned, which creates ambiguity in how values are reported.
  
  Configuration Issues: There may be a misconfiguration in the asset accounting settings, particularly in the definition of the chart of depreciation or the currency settings for the depreciation areas.
  Missing Entries: The required entries for the currency key in the configuration may be missing or incorrectly set up.
  
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings for the chart of depreciation in the SAP system (Transaction code: