Failed to find leafref target using specific combination of leafref and grouping, where grouping contains two leafrefs. One is pointing to the second and the second is pointing outside of grouping using relative paths.
For better understanding look at this gerrit change containing model and test for it - https://git.opendaylight.org/gerrit/c/mdsal/+/88124
If leafref-2 does not use relative path (but absolute) OR leafref-1 does not exists OR we grouping is not used, then everything seems working.
This is simplified case of this openconfig ACL model - https://github.com/openconfig/public/blob/master/release/models/acl/openconfig-acl.yang
Thrown error:
java.lang.IllegalArgumentException: Failed to find leafref target: ../../leaf-1 in module specific-grouping-leafref (QNameModule{ns=odl:test:leafref:grouping:nested, rev=2020-02-28}) at com.google.common.base.Preconditions.checkArgument(Preconditions.java:459) at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.provideTypeForLeafref(AbstractTypeProvider.java:553) at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForLeafrefOrIdentityRef(AbstractTypeProvider.java:301) at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForSchemaDefinitionType(AbstractTypeProvider.java:198) at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForSchemaDefinitionType(AbstractTypeProvider.java:161) at org.opendaylight.mdsal.binding.generator.spi.TypeProvider.javaTypeForSchemaDefinitionType(TypeProvider.java:41) at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.resolveTypeFromDataSchemaNode(AbstractTypeProvider.java:726) at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.provideTypeForLeafref(AbstractTypeProvider.java:564) at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForLeafrefOrIdentityRef(AbstractTypeProvider.java:301) at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForSchemaDefinitionType(AbstractTypeProvider.java:198) at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.resolveLeafSchemaNodeAsMethod(AbstractTypeGenerator.java:1441) at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.addSchemaNodeToBuilderAsMethod(AbstractTypeGenerator.java:1139) at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.resolveDataSchemaNodes(AbstractTypeGenerator.java:1092) at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.containerToGenType(AbstractTypeGenerator.java:308) at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.addSchemaNodeToBuilderAsMethod(AbstractTypeGenerator.java:1143) at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.resolveDataSchemaNodes(AbstractTypeGenerator.java:1092) at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.groupingsToGenTypes(AbstractTypeGenerator.java:762) at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.moduleToGenTypes(AbstractTypeGenerator.java:240) at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.<init>(AbstractTypeGenerator.java:205) at org.opendaylight.mdsal.binding.generator.impl.CodegenTypeGenerator.<init>(CodegenTypeGenerator.java:33) at org.opendaylight.mdsal.binding.generator.impl.DefaultBindingGenerator.generateFor(DefaultBindingGenerator.java:76) at org.opendaylight.mdsal.binding.generator.impl.DefaultBindingGenerator.generateFor(DefaultBindingGenerator.java:43)