diff --git a/add-schema.sh b/add-schema.sh
index 33ea555bd3a..bc253369d49 100755
--- a/add-schema.sh
+++ b/add-schema.sh
@@ -51,18 +51,19 @@ then
 
   echo "Adding schema ${schema} to schemas/pom.xml"
 
-  sed $sedopt "${line} a\\
-    <module>${schema}</module>
-  " schemas/pom.xml
+  sed $sedopt -f /dev/stdin schemas/pom.xml << SED_SCRIPT
+  ${line} a\\
+\    <module>${schema}</module>
+SED_SCRIPT
 fi
 
 
 # Add schema dependency in web/pom.xml
-line=$(grep -n "schema-${schema}" web/pom.xml | cut -d: -f1)
+line=$(grep -m 1 -n "schema-${schema}" web/pom.xml | cut -d: -f1)
 
 if [ ! $line ]
 then
-  line=$(grep -n 'schema-iso19139</artifactId>' web/pom.xml | cut -d: -f1)
+  line=$(grep -m 1 -n 'schema-iso19139</artifactId>' web/pom.xml | cut -d: -f1)
   insertLine=$(($line + 2))
 
   projectGroupId='${project.groupId}'
@@ -70,13 +71,14 @@ then
 
   echo "Adding schema ${schema} dependency to web/pom.xml"
 
-  sed $sedopt "${insertLine} a\\
-<dependency>\\
-<groupId>${projectGroupId}</groupId>\\
-<artifactId>schema-${schema}</artifactId>\\
-<version>${gnSchemasVersion}</version>\\
-</dependency>
-  " web/pom.xml
+  sed $sedopt -f /dev/stdin web/pom.xml << SED_SCRIPT
+  ${insertLine} a\\
+\    <dependency>\\
+\      <groupId>${projectGroupId}</groupId>\\
+\      <artifactId>schema-${schema}</artifactId>\\
+\      <version>${gnSchemasVersion}</version>\\
+\    </dependency>
+SED_SCRIPT
 fi
 
 
@@ -85,18 +87,29 @@ line=$(grep -n "schemas/${schema}/src/main/plugin</directory>" web/pom.xml | cut
 
 if [ ! $line ]
 then
-  line=$(grep -n 'schemas/iso19139/src/main/plugin</directory>' web/pom.xml | cut -d: -f1)
-  finalLine=$(($line + 3))
+  line=$(grep -n 'schema-iso19139</artifactId>' web/pom.xml | tail -n1 | cut -d: -f1)
+  finalLine=$(($line + 11))
 
   projectBaseDir='${project.basedir}'
   baseDir='${basedir}'
 
   echo "Adding schema ${schema} resources to web/pom.xml"
 
-  sed $sedopt "${finalLine} a\\
- <resource>\\
-    <directory>${projectBaseDir}/../schemas/${schema}/src/main/plugin</directory>\\
-    <targetPath>${baseDir}/src/main/webapp/WEB-INF/data/config/schema_plugins</targetPath>\\
-  </resource>
-  " web/pom.xml
+  sed $sedopt -f /dev/stdin web/pom.xml << SED_SCRIPT
+  ${finalLine} a\\
+\                    <artifactItem>\\
+\                      <groupId>${projectGroupId}</groupId>\\
+\                      <artifactId>${schema}</artifactId>\\
+\                      <version>${gnSchemasVersion}</version>\\
+\                      <type>jar</type>\\
+\                      <overWrite>false</overWrite>\\
+\                      <outputDirectory>${basedir}/src/main/webapp/WEB-INF/data/config/schema_plugins</outputDirectory>\\
+\                      <includes>plugin/**</includes>\\
+\                      <fileMappers>\\
+\                        <fileMapper implementation="org.codehaus.plexus.components.io.filemappers.RegExpFileMapper">\\
+\                          <pattern>^plugin/</pattern><replacement>./</replacement>\\
+\                        </fileMapper>\\
+\                      </fileMappers>\\
+\                    </artifactItem>\\
+SED_SCRIPT
 fi
diff --git a/pom.xml b/pom.xml
index c5659193c46..61d0e34e546 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1465,6 +1465,5 @@
     <jolokia.version>1.6.0</jolokia.version>
     <httpcomponents.version>4.5.9</httpcomponents.version>
     <gn.schemas.version>3.10-SNAPSHOT</gn.schemas.version>
-    <gn.schemas.version.range>[3.7,3.11]</gn.schemas.version.range>
   </properties>
 </project>
diff --git a/schemas/README.md b/schemas/README.md
index 9f9c9311e9d..28440390ec0 100644
--- a/schemas/README.md
+++ b/schemas/README.md
@@ -2,19 +2,20 @@
 
 ## Schema Plugin Definition
 
-#. `src/main/plugin/<folder>` plugin contents:
+1. `src/main/plugin/<folder>` contents:
    
-  * `schema-ident.xml` configuration file
-  * schema definition `xsd` files
-  * transformations `xsl` files
-  * See [GeoNetwork Manual](https://geonetwork-opensource.org/manuals/trunk/en/customizing-application/implementing-a-schema-plugin.html)
+   * `schema-ident.xml` required configuration file
+   * schema definition `xsd` files
+   * transformations `xsl` files
+  
+   See [GeoNetwork Manual](https://geonetwork-opensource.org/manuals/trunk/en/customizing-application/implementing-a-schema-plugin.html)
 
-#. `src/main/java` providing:
+2. `src/main/java` providing:
   
   * Optional: SchemaPlugin bean
   * Optional: ApplicationListener<ServerStartup> to auto install plugin
 
-#. Be sure your plugin includes `src/main/plugin`:
+3. Schema plugin `pom.xml` must include `src/main/plugin` in resources section:
    
    ```xml
     <resources>
@@ -28,11 +29,40 @@
     </resources>
    ```
 
-#. Use `mvn install` to install your schema plugin in your local repository.
+4. If you need to depend on any modules please make use of:
+  
+   * `gn.project.version` property for geonetwork modules:
+   
+      ```xml
+     <dependency>
+       <groupId>${project.groupId}</groupId>
+       <artifactId>common</artifactId>
+       <version>${gn.project.version}</version>
+     </dependency>
+      ```
+   
+   * `project.version` property for other schemas (or schema-core):
+     
+     ```
+     <dependencies>
+       <dependency>
+         <groupId>${project.groupId}</groupId>
+         <artifactId>schema-core</artifactId>
+         <version>${project.version}</version>
+       </dependency>
+       <dependency>
+         <groupId>${project.groupId}</groupId>
+         <artifactId>schema-iso19139</artifactId>
+         <version>${project.version}</version>
+       </dependency>
+     </dependencies>
+     ```
+   
+5. Use `mvn install` to install your schema plugin in your local repository.
 
 ## Add a plugin to the build
 
-While schema plugins can be built idependently, they can be conditionally included in the build:
+While schema plugins can be built independently, they can be conditionally included in the build:
 
 1. Add schema plugin:
 
@@ -40,12 +70,12 @@ While schema plugins can be built idependently, they can be conditionally includ
    
    * As a git submodule if you are making a fork
 `
-2. Use a profile (activated by your folder being present) to include your schema plugin to the list of modules in `pom.xml`.
+2. Use a profile (activated by your schema plugin folder being present) to include your schema plugin to the list of modules in `pom.xml`.
    
    ```xml
    <profiles>
      <profile>
-       <id>iso19139.xyz</id>
+       <id>schema-iso19139.xyz</id>
        <activation>
        <file>
          <exists>iso19139.xyz</exists>
@@ -57,4 +87,6 @@ While schema plugins can be built idependently, they can be conditionally includ
      </profile>
    </profiles>
    ```
+   
+3. The `add-schema.sh` script automates these changes.
 
diff --git a/web/README.md b/web/README.md
index dcf61e46900..6031fd8a261 100644
--- a/web/README.md
+++ b/web/README.md
@@ -76,7 +76,7 @@ If your plugin is not in the `schemas` folder:
    mvn process-resources -Pschema-iso19139.xyz
    ```
 
-5. Tip: If you commonly work with a set series of plugins you can manage via [settings.xml](https://maven.apache.org/settings.html).
+5. Tip: If work with a set series of plugins you can manage via [settings.xml](https://maven.apache.org/settings.html).
 
 ## Including additional schema plugins
 
@@ -97,7 +97,7 @@ To include your schema plugin in `web/pom.xml`:
         <dependency>
           <groupId>${project.groupId}</groupId>
           <artifactId>schema-iso19115-3.2018</artifactId>
-          <version>${gn.schemas.version.range}</version>
+          <version>${gn.schemas.version}</version>
         </dependency>
       </dependencies>
       <build>
@@ -116,7 +116,6 @@ To include your schema plugin in `web/pom.xml`:
                     <artifactItem>
                       <groupId>${project.groupId}</groupId>
                       <artifactId>schema-iso19115-3.2018</artifactId>
-                      <version>${gn.schemas.version}</version>
                       <type>jar</type>
                       <overWrite>false</overWrite>
                       <outputDirectory>${basedir}/src/main/webapp/WEB-INF/data/config/schema_plugins</outputDirectory>
@@ -140,8 +139,8 @@ To include your schema plugin in `web/pom.xml`:
 2. This profile example has several interesting features:
    
    * Activates automatically if the `schemas/iso19115-3.2018` folder is present
-   * Disabled if `-DcopySchemas=true` property is set
-   * Adds a dependency using a version range so that the schema plugin jar is included
+   * Disabled if `-DschemasCopy=true` property is set
+   * Adds a dependency so that the schema plugin jar is included on the classpath
    * Unpacks a `plugin` folder into the webapp `schema_plugins` folder
 
 3. Over time we expect active metadata101 schema plugins be listed.
@@ -155,7 +154,7 @@ An alternative approach of copying folders is available using the `-DschemasCopy
 
 To add your schema plugin to the `schemas-copy` profile:
 
-1. Locate the `schemas-copys` profile in `pom.xml`:
+1. Locate the `schemas-copy` profile in `web/pom.xml`:
 
 2. Add your plugin as a dependency to the profile:
 
@@ -163,11 +162,13 @@ To add your schema plugin to the `schemas-copy` profile:
    <dependency>
      <groupId>${project.groupId}</groupId>
      <artifactId>schema-iso19139.xyz</artifactId>
-     <version>${project.version}</version>
+     <version>${gn.schemas.version}</version>
    </dependency>
    ```
    
-3. By default each `src/main/plugin` folder in `schemas` is copied, if your plugin is in a different location:
+3. By default each `src/main/plugin` folder in `schemas` is copied.
+
+   If your plugin is in not in the `schemas` folder:
    
    ```xml
    <resource>
@@ -178,3 +179,12 @@ To add your schema plugin to the `schemas-copy` profile:
    ```
 
 5. This approach modifies `web/pom.xml` so it can only be recommended in a fork or branch.
+
+7. Implementation notes:
+   
+   * The `<dependency>` added here makes use of a specific verion number.
+   
+   * If your plugin is inheriting its version number from `schemas/pom.xml` you may use
+     the property `gn.schemas.version`.
+
+6. The `add-schema.sh` script automates these changes.
diff --git a/web/pom.xml b/web/pom.xml
index 6a240e16315..fa29d27e2e4 100644
--- a/web/pom.xml
+++ b/web/pom.xml
@@ -854,7 +854,7 @@
         <dependency>
           <groupId>${project.groupId}</groupId>
           <artifactId>schema-iso19115-3.2018</artifactId>
-          <version>${gn.schemas.version.range}</version>
+          <version>${gn.schemas.version}</version>
         </dependency>
       </dependencies>
       <build>
@@ -868,12 +868,10 @@
                 <phase>process-resources</phase>
                 <goals><goal>unpack</goal></goals>
                 <configuration>
-                  <encoding>UTF-8</encoding>
                   <artifactItems>
                     <artifactItem>
                       <groupId>${project.groupId}</groupId>
                       <artifactId>schema-iso19115-3.2018</artifactId>
-                      <version>${gn.schemas.version}</version>
                       <type>jar</type>
                       <overWrite>false</overWrite>
                       <outputDirectory>${basedir}/src/main/webapp/WEB-INF/data/config/schema_plugins</outputDirectory>