Maven project dependency "could not find artifact" - maven

Question

I have 2 maven projects. Project A and Project B. Project B is dependent on Project A but not the other way around.
In my project B pom I have this:
<dependency>
<groupId>com</groupId>
<artifactId>ProjectA</artifactId>
<type>pom</type>
<version>1.0-SNAPSHOT</version>
</dependency>
When i try to package the project it fails with this error:
[ERROR] Failed to execute goal on project ProjectB: Could not resolve dependencies for project com:ProjectB:war:1.0-SNAPSHOT: Could not find artifact com:ProjectA:pom:1.0-SNAPSHOT -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal on project ProjectB: Could not resolve dependencies for project com:ProjectB:war:1.0-SNAPSHOT: Could not find artifact com:ProjectA:pom:1.0-SNAPSHOT
So it can't find my ProjectA pom. Do I need to put it in my project? Where should it be located in my file structure.
For what it's worth, I am using intelliJ IDE.
Thanks in advance.
EDIT: When i run install on projectA I get this error:
The packaging for this project did not assign a file to the build artifact
EDIT2 - Adding ProjectA pom:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>edu</groupId>
<artifactId>ProjectA</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>ProjectA</name>
<build>
<sourceDirectory>src/main/java</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
<executions>
<execution>
<id>install-jar-lib</id>
<phase>validate</phase>
<goals>
<goal>install-file</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.8</version>
<executions>
<execution>
<id>prepare-package</id>
<phase>prepare-package</phase>
<configuration>
<target>
<copy file="${basedir}/src/main/webapp/META-INF/context-${app.environment}.xml"
tofile="${basedir}/src/main/webapp/META-INF/context.xml" />
<copy file="${basedir}/src/main/webapp/WEB-INF/web-${app.environment}.xml"
tofile="${basedir}/src/main/webapp/WEB-INF/web.xml" />
<copy file="${basedir}/src/main/resources/log4j-${app.environment}.xml"
tofile="${basedir}/src/main/resources/log4j.xml" />
</target>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
<execution>
<phase>compile</phase>
<configuration>
<target>
<copy file="${project.build.directory}/classes/log4j-${app.environment}.xml"
tofile="${project.build.directory}/classes/log4j.xml" />
<delete>
<fileset dir="${project.build.directory}/classes" includes="**/*-local.*"/>
<fileset dir="${project.build.directory}/classes" includes="**/*-test.*"/>
<fileset dir="${project.build.directory}/classes" includes="**/*-prod.*"/>
</delete>
</target>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
<execution>
<id>package</id>
<phase>package</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target>
<delete file="${basedir}/src/main/webapp/META-INF/context.xml" />
<delete file="${basedir}/src/main/webapp/WEB-INF/web.xml" />
<tstamp>
<format property="last.timestamp" pattern="yyyyMMddHHmmss"/>
</tstamp>
<property name="build.time" value="${last.timestamp}" />
</target>
<exportAntProperties>true</exportAntProperties>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<failOnMissingWebXml>true</failOnMissingWebXml>
<!--<webResources>
<resource>
<directory>src/main/WEB-INF/lib</directory>
<targetPath>WEB-INF/lib</targetPath>
<filtering>false</filtering>
<includes>
<include>**/*.jar</include>
</includes>
</resource>
</webResources>-->
</configuration>
</plugin>
<plugin>
<groupId>com.coderplus.maven.plugins</groupId>
<artifactId>copy-rename-maven-plugin</artifactId>
<version>1.0.1</version>
<executions>
<execution>
<id>rename-file</id>
<phase>package</phase>
<goals>
<goal>rename</goal>
</goals>
<configuration>
<sourceFile>${project.build.directory}/${artifactId}-${version}.war</sourceFile>
<destinationFile>${project.build.directory}/ProjectA##${build.time}.war</destinationFile>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>

Answer 1

You have to install ProjectA in your local Maven repo (or otherwise make it available in whatever remote repositories your pom.xml or settings.xml point at). For example:
cd whereever/projectA/lives
mvn clean install
This will write com/ProjectA/ProjectA.pom to your local Maven repo and when you do this ...
cd wherever/projectB/lives
mvn clean install
... Maven will resolve ProjectA.pom from that location.
Note: the dependency you have declared on ProjectA:
<dependency>
<groupId>com</groupId>
<artifactId>ProjectA</artifactId>
<type>pom</type>
<version>1.0-SNAPSHOT</version>
</dependency>
... will transitively add all dependencies declared in com:ProjectA to ProjectB's POM, is that definitely your intention? This only makes sense if ProjectA is packaged as a POM, if it is packaged as a JAR then you need to update the dependency declaration in ProjectB to remove this line: <type>pom</type>.