This case involves a priority battle between two creditors, Enterprise Bank (Enterprise) and Landmark Bank of St. Charles County (Landmark), over the assets of Gus-tave and Laura Saettele (the Saetteles). Enterprise аppeals the district court’s judgment upholding the validity of Landmark’s prejudgment attachment of certain assets of the Saetteles,
I. BACKGROUND
The procedural history of this ease is complex, but at bottom, this appeal now involves a priority battle between two creditors each seeking to satisfy their respective judgments against the limited, but substantial, assets of the Saetteles. The assets involved in this dispute are real property оwned by the Saet-teles and Landmark Bankshares Corporation stock (Landmark stock) in the Saetteles’ account at Oppenheimer & Co. (Oppenheimer). Apparently, the Saetteles’ assets arе insufficient to satisfy the judgments of both creditors. Therefore, determination of which creditor is entitled to first priority to the Saetteles’ assets is hotly contested by both Enterprise and Landmark. Resolution of this priority battlе turns on the validity of Landmark’s prejudgment attachment of these assets.
In March 1991, Enterprise filed suit in district court against the Saetteles (No. 91-0616C(6),
Enterprise
lawsuit). In April 1991, Landmark also filed suit in the same district court, before a different district judge, against the Saetteles (No. 91-0787C(5),
Landmark
lawsuit).
In January 1992, Enterprise, aware that it could not execute its judgment as to certain assets of the Saetteles because of Landmark’s prior prejudgment attachment, sought to intervene in the Landmark lawsuit in order to attack the validity of Landmark’s prejudgment attachment. On February 18, 1992, the district court in the Landmark lawsuit granted judgment in favor of Landmark against the Saetteles and denied Enterprise’s motion to intervene. Because Landmark had prevailed in its suit against the Saetteles, the priority date of its judgment lien reverted back to the date of the United States Marshal’s delivery of the prejudgment writs of attachment. If Landmark’s prejudgment attachment was proper, then the priority date of its lien is September 26 and 27 of 1991, i.e., prior to Entеrprise’s December 1991 priority date. Therefore, the *235 validity of Landmark’s prejudgment attachment is dispositive of this priority battle.
Instead of appealing the denial of its motion to intervene by the district court in the Landmark lawsuit, Enterprise motioned the district court in the Enterprise lawsuit to consolidate the Enterprise lawsuit and the Landmark lawsuit to determine the validity of Landmark’s prejudgment attachment. Landmark opposed this consolidation. The district court in the Enterprise lawsuit granted Enterprise’s motion to consolidate in May 1992, and requested briefing as to thе validity of Landmark’s prejudgment attachment.
On October 5, 1992, the district court in the Enterprise lawsuit issued an order upholding the validity of Landmark’s prejudgment attachment and dissolving the prior consolidation of the two cases. Specifically, the district court held that Enterprise’s challenge was untimely because Enterprise had failed to appeal the denial of its motion to intervene in the Landmark suit. Assuming, however, that the challenge was timely, the district court held that Enterprise lаcked standing to raise the constitutional rights of the Saetteles. Finally, the district court rejected Enterprise’s challenge to the attachment of the Saetteles’ Landmark stock based on Missouri law. Enterprisе timely appealed.
II. DISCUSSION
Before we can analyze the propriety of the district court’s decision on the merits, we first must determine whether the district court had authority to resolve the merits of the suit. If the consоlidation of the lawsuits was improper and if this error affected the district court’s jurisdiction, then the district court was without authority to resolve the dispute over the validity of Landmark’s prejudgment attachment. We must determinе, therefore, whether that consolidation was proper, and, if improper, whether it affected the district court’s jurisdiction.
Federal Rule of Civil Procedure 42(a) (Rule 42(a)) governs consolidation and states:
Cоnsolidation. When actions involving a common question of law or fact are pending before the court, it may order a joint hearing or trial of any or all the matters in issue in the actions; it may order all the aсtions consolidated; and it may make such orders concerning proceedings therein as may tend to avoid unnecessary costs or delay.
Fed.R.Civ.P. 42(a). The district court’s broad discretion in ordering the consolidаtion of matters is not unbounded, and we will reverse a district court’s decision to consolidate for an abuse of discretion.
United States EPA v. City of Green Forest,
Rule 42(a) states that a district court may consolidate separate actions whеn those “actions involv[e] a common question of law or fact.” Fed.R.Civ.P. 42(a);
see Seguro de Servicio de Salud v. McAuto Sys. Group,
The district court consolidated the
Landmark
lawsuit and the
Enterprise
lawsuit “solely to determine the validity of [Landmark’s prejudgment] attachment.” Apрellant’s App. at 117. The district court ordered this limited consolidation “ ‘to avoid
*236
unnecessary costs or delay.’”
Id.
(quoting Fed.R.Civ.P. 42(a)). The
Landmark
lawsuit and the
Enterprise
lawsuit involved neither common issues of law nor common issues of fact. Both cases involved breach of contract claims against the Saetteles. The legal issues are unrelated. Further, the only common factual thread running through the lawsuits was the fact that the Saetteles were defendants in both cases. Specifically, the matter fоr which the district court consolidated the two lawsuits, the validity of Landmark’s prejudgment attachment, was not in issue in either of the lawsuits. In the
Landmark
lawsuit, the Saetteles did not contest the validity of the prejudgment attachment.
1
The validity of Landmark’s prejudgment attachment also was not at issue in the
Enterprise
lawsuit. The two lawsuits contained no common issues of law or fact.
2
Because a common issue of law or fact is a prerequisite to consolidation, the district court abused its discretion by consolidating the two lawsuits.
See
Fed.R.Civ.P. 42(a);
see also Frazier,
Because consolidation, when proper, does not mergе the two separate lawsuits, it normally would not affect the district court’s jurisdiction.
See Johnson,
The district court’s consolidation created a lawsuit distinct and separate from the two individual lawsuits.
Cf. Johnson,
The consolidation also created an adversary relationship between Enterprise and Landmark, the plaintiffs in the two lawsuits. The Saetteles, the sole defendants in both the Enterprise and the Landmark lawsuits, never challenged the validity of Landmark’s prejudgment attaсhment, and therefore, they were not involved directly in the consolidated action. Through consolidation, however, the district court transformed Landmark from its role as a plaintiff in the Landmark lawsuit into the defendant in the сonsolidated action. The district court’s consolidation created a forum in whieh to resolve this new priority battle between Enterprise and Landmark. Enterprise never filed a complaint; Landmark never filеd an answer. Nevertheless, Landmark became a defendant protecting the validity of its prejudgment attachment. Because the district court consolidated two cases that involved no common facts or legal issues and the issue for which the district court consolidated the cases created an adversarial relationship between parties who formerly both were plaintiffs in the two individual lawsuits, the consоlidation affected *237 the district court’s jurisdiction over the third lawsuit. 4
Thus, we conclude that the district court abused its discretion by improperly consolidating the two separate lawsuits and that this abuse of discretion was a jurisdictional error.
III. CONCLUSION
Based on the fоregoing, we vacate the district court’s judgment and dismiss the appeal. 5
Notes
. Enterprise sought to intervene in the Landmark lawsuit to raise this very issue, but the district court denied that intervention. Enterprise chose not to appeal that decision. Thus, the validity of Landmаrk's prejudgment attachment never was in issue in the Landmark lawsuit.
. We have no doubt that the validity of Landmark's prejudgment attachment would be an issue in a priority dispute between Landmark and Enterprise. Nevertheless, neither the Enterprise lawsuit nor the Landmark lawsuit is а priority dispute involving the validity of a prejudgment attachment.
. Landmark opposed the district court's consolidation below. Landmark, however, could not appeal the consolidation because the district court held in favor of Landmark on the merits.
See Public Serv. Comm'n v. Brashear Freight Lines,
. The district court did not address whether it had jurisdiction over this new lawsuit. For example, Enterprise never filed a complaint that set out the basis for jurisdiction in this priority battle; assuming that jurisdiction were based оn diversity of citizenship, the district court did not determine whether Enterprise and Landmark were diverse parties. These infirmities point out the jurisdictional problems when a district court consolidates an action under Rule 42(a) to create a separate lawsuit.
. Landmark's various motions seeking to dismiss this appeal are denied as moot.
