How To Fix MQ155 - Package &1 is in phase &2; you cannot start conversion programs

MQ155 - Overview

• Message type: E = Error

• Message class: MQ - Messages for Euro Changeover Package

• Message number: 155

• Message text: Package &1 is in phase &2; you cannot start conversion programs

What causes this issue?

You want to start converting the tables. The active package is,
however, not in one of the valid phases:
<NP>FILL - Loading the control tables
GENERATION - Generating the conversion programs
CONVERSION - Conversion
RECON - Reconciliation</>

System Response

When all programs within a phase have been run, the phase for the
current package is automatically started. Conversion programs cannot
run in the ANALYZE or POST phase.

How to fix this error?

If the package is in the ANALYZE phase, wait until this phase has been
completed and then start the conversion.
If the package is in the POST phase, conversion of the tables has
already been completed.

Error message extract from SAP system. Copyright SAP SE.

MQ155 - Details

• The SAP error message MQ155 indicates that a package is in a specific phase, and as a result, you cannot start conversion programs related to that package. This error typically occurs during the transport or upgrade process when a package is not in a state that allows for certain operations to be performed.
  
  Cause:
  The error message MQ155 is usually caused by one of the following reasons:
  
  Package Status: The package is in a phase that does not allow for conversion programs to be executed. This could be due to the package being in a "locked" state or in a phase of processing (e.g., "import", "release", etc.) that prohibits further actions.
  Transport Issues: If the package is part of a transport request that has not been fully processed or is still being imported, it may lead to this error.
  Upgrade or Migration: During system upgrades or migrations, certain packages may be in a transitional state,