How To Fix WA644 - Type linkage &1-&2 <--> &3 cannot be updated

WA644 - Overview

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 644

• Message text: Type linkage &1-&2 <--> &3 cannot be updated

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WA644 - Type linkage &1-&2 <--> &3 cannot be updated ?

  The SAP error message:
  WA644 Type linkage &1-&2 <--> &3 cannot be updated
  typically occurs in the context of type linkages in SAP, especially when dealing with data dictionary objects or table type relationships.
  
  Cause
  This error indicates that the system is trying to update or modify a type linkage between two or more data types (e.g., structures, tables, or data elements), but the update is not allowed or possible due to existing constraints or inconsistencies.
  More specifically:
  
  The linkage between the specified types (&1 and &2) and the type &3 is locked, inconsistent, or not allowed to be changed.
  This can happen if the type linkage is used in active objects or if the system detects that changing the linkage would break dependencies.
  It may also occur if you try to change a type linkage that is part of a standard SAP object or a transport request that is locked.
  Sometimes, the error arises during transport import or