How to fix SAP error WAB068?

What causes this issue? External number assignment is active for this number range. In this case, the method EXTERNAL_NUMBER_ASSIGNMENT in BAdI <DS:SIMG.WLF_NUMBER_CHANGE>WLF_NUMBER_CHANGE</> must be implemented to determine the number. This is not the case.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? INCLUDE ISR_CHECKProcedure for System Administrators Error message extract from SAP system. Copyright SAP SE.

How To Fix WAB068 - External number assignment not implemented (number range &1 &2)

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SAP Error Message - Details

Message type: E = Error
Message class: WAB - Messages Settlement Management
Message number: 068
Message text: External number assignment not implemented (number range &1 &2)
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What causes this issue?
External number assignment is active for this number range. In this
case, the method EXTERNAL_NUMBER_ASSIGNMENT in BAdI
<DS:SIMG.WLF_NUMBER_CHANGE>WLF_NUMBER_CHANGE</> must be implemented to
determine the number. This is not the case.
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?
INCLUDE ISR_CHECK
Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

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What is the cause and solution for SAP error message WAB068 - External number assignment not implemented (number range &1 &2) ?

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