Enhance/offer creation validations

[jjeroch]

Description

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Why

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Issue

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Checklist

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• I have followed the contributing guidelines
• I have performed IP checks for added or updated 3rd party libraries
• I have created and linked IP issues or requested their creation by a committer
• I have performed a self-review of my own code
• I have successfully tested my changes locally
• I have added tests that prove my changes work
• I have checked that new and existing tests pass locally with my changes
• I have commented my code, particularly in hard-to-understand areas

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

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[jjeroch]

will get squashed and transferred to eclipse as soon as the changes are all incorporated