> For the complete documentation index, see [llms.txt](https://docs.snomed.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snomed.org/snomed-ct-specifications/snomed-ct-expression-constraint-language/appendices/appendix-b-examples-of-invalid-expressions/b3-cardinality-invalid-expressions.md).

# Cardinality - Invalid

<table data-full-width="true"><thead><tr><th>Invalid Expression Constraint</th><th>Precoordinated</th><th>Postcoordinated</th></tr></thead><tbody><tr><td>&#x3C; 373873005 | Pharmaceutical / biologic product| : [1..3] 127489000 | Has active ingredient| = &#x3C; 105590001 | Substance|</td><td>279999999108 | Inert tablet| 437867004 | Chlorphenamine + dextromethorphan + paracetamol + pseudoephedrine|</td><td>373873005 | Pharmaceutical / biologic product| : { 127489000 | Has active ingredient| = 412031009 | Paracetamol or derivative| }, { 127489000 | Has active ingredient| = 387494007 | Codeine| }, { 127489000 | Has active ingredient| = 255641001 | Caffeine| }, { 127489000 | Has active ingredient| = 44068004 | Doxylamine| }</td></tr><tr><td>&#x3C; 373873005 | Pharmaceutical / biologic product| : [1..1] 127489000 | Has active ingredient| = &#x3C; 105590001 | Substance|</td><td>279999999108 | Inert tablet| 412556009 | Paracetamol + codeine|</td><td>373873005 | Pharmaceutical / biologic product| : { 127489000 | Has active ingredient| = 412031009 | Paracetamol or derivative| }, { 127489000 | Has active ingredient| = 387494007 | Codeine| }</td></tr><tr><td>&#x3C; 373873005 | Pharmaceutical / biologic product| : [0..1] 127489000 | Has active ingredient| = &#x3C; 105590001 | Substance|</td><td>412556009 | Paracetamol + codeine|</td><td>373873005 | Pharmaceutical / biologic product| : { 127489000 | Has active ingredient| = 412031009 | Paracetamol or derivative| }, { 127489000 | Has active ingredient| = 387494007 | Codeine| }</td></tr><tr><td>&#x3C; 373873005 | Pharmaceutical / biologic product| : [1..*] 127489000 | Has active ingredient| = &#x3C; 105590001 | Substance|</td><td>279999999108 | Inert tablet|</td><td>373873005 | Pharmaceutical / biologic product| : 411116001 | Has dose form| = 385055001 | Tablet|</td></tr><tr><td>&#x3C; 404684003 | Clinical finding| : [1..1] 363698007 | Finding site| = &#x3C; 91723000 | Anatomical structure|</td><td>75857000 | Fracture of radius and ulna| 40733004 | Infectious disease|</td><td>404684003 | Clinical finding| : { 116676008 | Associated morphology| = 72704001 | Fracture| , 363698007 | Finding site| = 62413002 | Bone structure of radius| , 363698007 | Finding site| = 23416004 | Bone structure of ulna| }</td></tr><tr><td>&#x3C; 404684003 | Clinical finding| : [2..*] 363698007 | Finding site| = &#x3C; 91723000 | Anatomical structure|</td><td>23406007 | Arm fracture| 40733004 | Infectious disease|</td><td>404684003 | Clinical finding| : { 116676008 | Associated morphology| = 72704001 | Fracture| , 363698007 | Finding site| = 702468001 | Bone structure of lower leg| }</td></tr><tr><td>&#x3C; 404684003 | Clinical finding| : { [2..*] 363698007 | Finding site| = &#x3C; 91723000 | Anatomical structure| }</td><td>75857000 | Fracture of radius and ulna|</td><td>64572001 | Disease| : { 116676008 | Associated morphology| = 396351009 | Congenital septal defect| , 363698007 | Finding site| = 113262008 | Thoracic aorta structure| } { 116676008 | Associated morphology| = 90141005 | Congenital hypertrophy| , 363698007 | Finding site| = 244384009 | Entire right ventricle| }</td></tr><tr><td>&#x3C; 373873005 | Pharmaceutical / biologic product| : [1..3] { [1..*] 127489000 | Has active ingredient| = &#x3C; 105590001 | Substance| }</td><td>279999999108 | Inert tablet| 437867004 | Chlorphenamine + dextromethorphan + paracetamol + pseudoephedrine|</td><td>373873005 | Pharmaceutical / biologic product| : { 127489000 | Has active ingredient| = 412031009 | Paracetamol or derivative| }, { 127489000 | Has active ingredient| = 387494007 | Codeine| }, { 127489000 | Has active ingredient| = 255641001 | Caffeine| }, { 127489000 | Has active ingredient| = 44068004 | Doxylamine| }</td></tr><tr><td>&#x3C; 373873005 | Pharmaceutical / biologic product| : [0..1] { 127489000 | Has active ingredient| = &#x3C; 105590001 | Substance| }</td><td>412556009 | Paracetamol + codeine|</td><td>373873005 | Pharmaceutical / biologic product| : { 127489000 | Has active ingredient| = 412031009 | Paracetamol or derivative| }, { 127489000 | Has active ingredient| = 387494007 | Codeine| }</td></tr><tr><td>&#x3C; 373873005 | Pharmaceutical / biologic product| : [1..*] { 127489000 | Has active ingredient| = &#x3C; 105590001 | Substance| }</td><td>279999999108 | Inert tablet|</td><td>373873005 | Pharmaceutical / biologic product| : 411116001 | Has dose form| = 385055001 | Tablet|</td></tr><tr><td>&#x3C; 404684003 | Clinical finding| : [1..1] { 363698007 | Finding site| = &#x3C; 91723000 | Anatomical structure| }</td><td>75857000 | Fracture of radius and ulna| 40733004 | Infectious disease|</td><td>404684003 | Clinical finding| : { 116676008 | Associated morphology| = 72704001 | Fracture| , 363698007 | Finding site| = 62413002 | Bone structure of radius| }, { 116676008 | Associated morphology| = 72704001 | Fracture| , 363698007 | Finding site| = 23416004 | Bone structure of ulna| }</td></tr><tr><td>&#x3C; 404684003 | Clinical finding| : [0..0] { [2..*] 363698007 | Finding site| = &#x3C; 91723000 | Anatomical structure| }</td><td>–</td><td>64572001 | Disease| : { 116676008 | Associated morphology| = 396351009 | Congenital septal defect| , 363698007 | Finding site| = 25943004 | Structure of atrioventricular node| , 363698007 | Finding site| = 113262008 | Thoracic aorta structure| } { 116676008 | Associated morphology| = 90141005 | Congenital hypertrophy| , 363698007 | Finding site| = 244384009 | Entire right ventricle| }</td></tr></tbody></table>

{% hint style="info" %}
The SNOMED CT identifiers created with the '9999999' namespace are for example only, and should not be used in a production environment.
{% endhint %}

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