How To Fix CNV_10020180 - &1 &2: Source package &3 is not assigned to a main source package

CNV_10020180 - Overview

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 180

• Message text: &1 &2: Source package &3 is not assigned to a main source package

What causes this issue?

The field you want to convert has <DS:DE.CNV_10020_PACKID_SOURCE>source
package number</> &V3& assigned. However no
<DS:DE.CNV_10020_PACKID_SOURCE_MAIN>main source package number</> could
be determined for this source package number.

System Response

Determination and delimitation for this field cannot be carried out
correctly.

How to fix this error?

Assign the source package number of a dependent package to the field.
&HINTS&

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

<ZH>CWB context:</> You can find the possible source package numbers and
their assignment to the main source package numbers for your package
&V4& by running transaction CNV_10030_SCENARIO.
If you did not blend a conversion package (but only the CWB basis and
the org. package, for example), an entry with package number &V4& as a
"dependent" package has automatically been created during "Initial Load
of Objects". If this is the case, you can specify &V4& as the source
package number.

Error message extract from SAP system. Copyright SAP SE.

CNV_10020180 - Details

• The SAP error message CNV_10020180 indicates that a source package is not assigned to a main source package during a data migration or conversion process. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion scenarios.
  
  Cause:
  The error occurs when:
  
  A source package (which contains data to be migrated) is not linked to a main source package. The main source package serves as a parent or primary package that organizes and manages related source packages.
  There may be a configuration issue where the source package was not properly defined or linked in the migration project.
  The data migration process is trying to access a source package that is not recognized as part of the main structure.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Package Assignment:
  
  Go to the relevant transaction or tool where the migration is being configured (e.g., SAP S/4HANA